Getting toned arms and legs sounds like a job for Mr. Nautilus. But Mr. Peach?

Maybe. Seems potassium-rich produce -- like peaches -- gives your muscles what they need to stay toned, healthy, and able to do their jobs.

It's a Balance
A diet heavy in proteins and cereal grains can cause blood to become too acidic. When this happens, muscle tissue can waste away. Fruits and vegetables, though, make your body's pH more alkaline -- mostly thanks to their high potassium content. So it makes sense that people in a recent study who loaded up on potassium-rich produce had more lean muscle mass than their produce-shirking peers. (Use this online tool to find other good potassium sources.)

Your Body, Years Ahead
Some other ways to shape up now and stay buff-looking long into your retirement years:

• Shape your core. These foundational muscles -- hips, tummy, back -- are where it all starts. Follow these easy ab-curl steps.
• Do perfect pairs. Your muscles crave symmetry -- so work reciprocating muscle groups (quads and hamstrings, abs and back, etc.). Watch this video to see which equipment is best for building each muscle group.
• Make it easy. You’re just 20 gym-free minutes away from a lean body with the YOU2 workout. Check out the video version.