NEW YORK - Feet are bouncing and torsos twirling in a first-grade classroom in Queens. It's phys ed time at PS 173 Fresh Meadows. Leading the pack is Coach Tom Gelardi, recently named the 2022 PE ...

High-intensity interval training has surprising benefits for fitness and physical power, but don’t stay seated the rest of the day. By Gretchen Reynolds A mere four seconds of all-out exercise, ...

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