Training

WORKOUT ROUTINES

Can you "one-up" our fitness expert's score?
The workout to pump up testosterone, burn fat, and build strength.

BUILD MUSCLE

4 Basic Rules for Muscles
Restricting blood flow may be the next best thing to weight training.

ENDURANCE

We sat down with Dean Karnazes to talk training, food, and more.
The average 5K time for men, plus other key running stats.
The precise mathematical formula you need to train for a marathon.

CARDIO

Five ways to prevent them—plus what to do if it's too late.
The trick? Controlling calories.
We asked over 1,200 people what they think about on a run.

PRO TIPS

These 15 things will guarantee you a sidelining injury.
Video: Essential punches for left-handed boxers.
Tips from world champ John Brzenk.