Gretchen Reynolds

• Your Move

The human body maintains the ability to adapt to exercise at any age, showing that it’s never too late to start a fitness program.

• Your Move

A few simple health measures can estimate your “fitness age” -- whether your body is biologically older — or younger — than your chronological age.

• Well+Being

We asked exercise experts for easy ways to test fitness for balance, mobility, grip strength, stamina and more.

• Your Move

This simple scientific workout includes just three exercises and can fit into anyone’s holiday schedule.

• The New Space Age

Humans evolved in conditions of plentiful gravity and relatively little radiation. Space is the reverse — and it upends almost every system inside of us.

• Your Move

These seven tips offer some surprisingly simple and practical ways to establish exercise habits that stick.

• Your Move

The new study of resistance exercise and the elderly found that even people in their 80s and 90s — who had never lifted weights before — showed significant gains

• Your Move

High-intensity exercise can dull your appetite for a few hours. But regular moderate exercise can make you hungrier.

• Your Move

Try these stretches, reduce practice swings, strength train and warm up to keep both your back and handicap in good shape.