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Core training can help prevent back pain when you're running.
Get in shape with these bodyweight, HIIT, and CrossFit routines.
Your ultimate cheat sheet to getting a ripped six-pack.
Here's how Ryan Reynolds chisels a blockbuster body.
Hit both sides of your six-pack.
The superstar actor showed off his rock-hard muscles on the beach.
Hit every part of your obliques.
If the beach beckons, you'd better be in shape.