April in Philly: A Doctor's Guide to the Month

April is the month Philadelphia comes back outside. The Phillies are back at Citizens Bank Park, the evenings stretch past 7:30, and the trees on every block go from bare to green in about 2 weeks, which is beautiful right up until the yellow film shows up on the car windshields. This guide walks through the 3 things April asks of you, so the month stays about the good parts.

Which labs are worth rechecking in spring

A Philadelphia winter moves your numbers, even when you did most things right. From November through March, most of us move less, eat heavier, drink a little more, and see almost no sun, and the body keeps a ledger of all of it. The markers that drift are predictable:

• Metabolic markers. Fasting glucose, A1C (the 3-month average of your blood sugar), triglycerides, and often blood pressure all run higher after a sedentary, carb-heavy winter. The changes are usually small, a few points here and there, and they are also the earliest, most reversible signal that insulin resistance is building. Catching a drift in April is a very different project than catching a diagnosis in October.
• Lipids, including ApoB. Cholesterol has a documented seasonal rhythm and tends to peak in the colder months. If your last panel was drawn in January, a spring recheck tells you which part of the number is winter and which part is you. If you have never had ApoB measured, the particle count that predicts heart risk better than standard cholesterol does, our ApoB guide explains why it belongs on the panel.
• Thyroid, when your energy stayed flat. Some winter tiredness is just winter. But if the fatigue did not lift when the light came back, if you are also colder than the people around you, gaining weight without a change in habits, or losing hair, that pattern deserves a TSH and free T4 rather than another month of pushing through.
• Vitamin D, after the dark months. At Philadelphia's latitude, the winter sun sits too low for your skin to make vitamin D from about November through February, so whatever you stored in the fall has been draining for months. April is when levels bottom out for many people. Our vitamin D3 and K2 guide covers dosing, what level to aim for, and why D and K2 travel together.

Spring is the season with runway. A medication adjustment, a supplement started, or a training habit built in April shows up in your June labs and pays out across the whole summer, when being outside and active is easy. The same change made in October fights the season the entire way.

In practice, a spring recheck is not complicated. We pick the panel around your history rather than running a default list, results come back in 7 to 10 days, and then we read them together until the numbers make sense to you, not just to me.

When your allergy plan is not holding

April is peak tree pollen in Philadelphia. Maple, birch, and oak release in overlapping waves from late March into May, counts run highest on warm, windy, dry mornings, and a single oak can release billions of grains. If your eyes itch on the walk to the El and your first hour of the day is spent sneezing, the trees on your block are the reason, and our pollen guide tracks how the season moves week to week.

The question worth asking in April is whether your plan has you controlled or just coping. Controlled means you sleep through the night, breathe through your nose, and mostly forget you have allergies. Coping means you take something every day and still plan your life around the count. A lot of people have accepted coping as the ceiling, and it is not.

If the plan is not holding, the fixes come in a specific order:

• Fix the timing first. Steroid nasal sprays (fluticasone, triamcinolone, and mometasone are the over-the-counter actives) are the single most effective medication class for nasal allergies, and they are not rescue medicines. They calm inflammation over days, reaching full effect after 1 to 2 weeks of daily use. Used only on bad days, they barely work. Started daily in early April and continued through May, they change the season.
• Then fix the technique, because it matters more than people expect. Head slightly forward, spray with the opposite hand (right hand for the left nostril), aim toward the ear rather than the middle of the nose, and sniff gently, not hard. Aiming at the septum wastes the dose and causes the nosebleeds that make people quit the spray that was about to help them.
• Add classes, don't carousel within one. If a daily second-generation antihistamine (cetirizine, loratadine, or fexofenadine) is not enough, switching to a different antihistamine rarely helps, because they all work on the same receptor. Adding a different class does: the nasal spray for congestion and drainage, antihistamine eye drops (ketotifen) for itchy eyes, a saline rinse in the evening to physically wash pollen out. Skip first-generation antihistamines like diphenhydramine for daily use; the sedation carries into the next day and shows up in driving performance.
• Keep the pollen out of the bedroom. Windows closed on high-count days, a shower before bed rather than after waking (pollen rides home in your hair), and outdoor clothes out of the bed. The 8 hours you sleep are a third of your exposure.

If you have done all of that and April still runs you over, the symptoms deserve a visit instead of another pharmacy trip. Sinus infections every spring, a cough or wheeze that shows up with the pollen (allergies and asthma travel together), sleep that stays broken, or a plan that only works at the cost of feeling drugged are each a reason to look deeper. Allergy testing tells us which trees are yours, and immunotherapy, given as shots or under-the-tongue tablets, retrains the immune system itself over time rather than muffling it every April for the rest of your life.

How to train for Broad Street without getting hurt

The Broad Street Run is the first Sunday in May: 10 miles straight down Broad Street from North Philadelphia to the Navy Yard, about 40,000 runners, the largest 10-mile race in the country, and gently downhill in a way that makes it kind to first-timers. April is the deciding month. Almost every Broad Street injury I see was set up in these 4 weeks, when the lottery email met a winter of low mileage and the training plan tried to make up the difference in a hurry.

The build that works is graduated and a little boring:

• Grow the week gently. Treat roughly a 10% increase in weekly mileage as a ceiling, not a target, and let the long run do the growing. If you can run 4 to 5 miles comfortably now, a long run of 6, then 7, then 8 miles across the next 3 weekends has you ready; race-day adrenaline and the crowd on Broad Street carry the last 2 miles. Walking stretches is a strategy, not a failure.
• Keep 1 to 2 rest days and cut the final week. Fitness is built during recovery, not during the run itself. The last 7 to 10 days before the race, reduce mileage rather than cramming; the hay is in the barn by then, and a taper is what lets you use it.
• Learn the difference between soreness and a warning. Ordinary training soreness lives on both sides, feels dull, eases as you warm up, and fades within 48 hours. The pains that matter behave differently: they favor one side, they sharpen as the run goes on instead of easing, they change your stride, or they hurt when you press on a specific spot on the bone, most often the inner shin or the top of the foot. Pain that alters how you run or is focal on bone is a stop-and-get-seen problem, because a stress reaction caught early costs you 2 easy weeks and one caught late costs you the race and most of the summer.
• Sleep and fuel like it is part of the plan, because it is. Muscle repairs and bone remodels during deep sleep, so the weeks you add mileage are the weeks to protect your bedtime. Eat normal carbohydrates the night before long runs, have something small and familiar the morning of, and practice race morning at least once in April. Nothing new on race day, including breakfast, shoes, and shorts. Hydration matters more as the month warms; the sodium-and-water approach in our hydration and electrolytes guide covers long runs, and early May has served up warm race days often enough to plan for one.

Training is also easier with company. Philadelphia's running clubs run group long runs through April, many of them building toward Broad Street specifically, and pace groups keep new runners from the too-fast starts that cause half of these injuries. Our guide to Philly running clubs matches clubs to neighborhoods and paces.

The evenings open up

The under-appreciated gift of April is the light. Sunset moves past 7:30, and the after-dinner hour becomes usable for the first time since October. A 30-minute evening walk is unglamorous and it is also legitimate cardiovascular base, a blood-sugar tool (a walk after dinner blunts the glucose rise from the meal), and for a lot of people the most reliable stress valve of the day. The Schuylkill Banks, the Delaware River Trail past Penn Treaty Park, and an ordinary loop of your own blocks all count the same.

The Phillies help here more than they get credit for. A game on the radio turns a long walk into something you look forward to, and a night at Citizens Bank Park comes with a surprising amount of walking built in. The single caution is sleep: later light nudges bedtime later, and a 10 PM final inning does the same, so keep your wake time steady and let the season stretch your evenings without stealing your mornings.

Guidance from the clinic

"The April visits usually come in 2 flavors. One is someone who has spent 10 springs coping with allergies and never knew the plan could work better; usually the medicines were right and the timing and technique were not. The other is someone who got the Broad Street lottery email in February and asked April to do the work of 3 months, and now a shin hurts. Both are very fixable, and both go better the earlier we look. Whatever we adjust in April, you get to enjoy for the whole summer."

Scientific References

1. Holick, M. F. (2007). Vitamin D deficiency. New England Journal of Medicine, 357(3), 266-281.
2. Knowler, W. C., Barrett-Connor, E., Fowler, S. E., et al. (2002). Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. New England Journal of Medicine, 346(6), 393-403.
3. Bousquet, J., Khaltaev, N., Cruz, A. A., et al. (2008). Allergic Rhinitis and its Impact on Asthma (ARIA) 2008 update. Allergy, 63(Suppl 86), 8-160.
4. van Gent, R. N., Siem, D., van Middelkoop, M., et al. (2007). Incidence and determinants of lower extremity running injuries in long distance runners: a systematic review. British Journal of Sports Medicine, 41(8), 469-480.

Related at Fishtown Medicine

• Pollen in Philadelphia - week-by-week counts and what to do at each tier
• Philly running clubs - training company for Broad Street, matched to pace and neighborhood
• Vitamin D3 and K2 clinical guide - dosing, target levels, and why they pair
• Hydration and electrolytes - the sodium-and-water approach for long runs and warm race days
• ApoB and heart health - the particle count worth adding to a spring panel
• July in Philly - the summer installment of this series