It may not take expensive scans and tests to show how healthy you are — an old-school exercise might tell you everything you need to know. Fitness experts revealed that classic workout jumping jacks ...

Look, I used to think those “100 jumping jacks = 10 calories” calculators were gospel. Then I started paying attention to real people doing real workouts, and wow – was I wrong. Those generic formulas ...

Three elementary-school-age students jumping in the air next to desks in a classroom. When Kusum Sinha, the superintendent of Garden City Public Schools in New York, took a trip this summer to Finland ...

When Kusum Sinha, the superintendent of Garden City Public Schools in New York, took a trip this summer to Finland, Estonia and Sweden with other district leaders, she came back wishing she could ...