Training

WORKOUT ROUTINES

Try this time-under-tension workout.
Five HIIT kettlebell workouts for fat loss.
Protect your body with three prehab exercises.

BUILD MUSCLE

Eight proven tricks to lifting weights.
Article criticizes trainer certifications.

ENDURANCE

The Mets might be on to something.
Ultramarathons you'd be crazy to run.
Improve endurance without losing muscle.

CARDIO

This type of cardio adds three years, says study.
Conquer your first marathon with our 12-week
Studies break down HIIT effectiveness.

PRO TIPS

Can I still use the Bowflex I found in my attic?
Embarrass workout partner, get results.
Power through the heart-pumping CrossFit WOD.