Add Yahoo as a preferred source to see more of our stories on Google. But if you're one of the millions of people stuck at a desk job, there's a good chance your stiff back is affecting your leg day.
These three squat variations build strength and muscle and increase functional fitness; here's how to do them and the benefits.
11don MSN
Squats build strength and muscle, and also increase functional fitness — have you tried these 3?
These three squat variations build strength and muscle.
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