Find out how music can be an important addition to your workout routine, something that can make a good workout great.

Knee and low back pain affects 19.5 and 28.1 percent of Americans, respectively. Before you resign yourself to a life of discomfort, though, read up on how exercise can actually help to ease that pain and start incorporating some effective moves into your routine.

When you have just enough time to suit up and show up, you can't go wrong by sticking to these 12 proven exercises. Blending strength and cardio, they'll hit all the major muscle groups while torching some serious fat and calories.

How do you know how much water to drink during a workout, or if you need the extra calories and electrolytes found in a sports drink?