(Another great sports tip from guest blogger Jon Doyle of Baseball Training)
Here's a simple exercise you can do just about anywhere--even watching TV--that will strengthen your abs, and your entire core, in no time.
It's called the Plank and it's pictured here:
Simply hold your body off the ground and only your arms and toes are touching the ground. Be sure to keep your body parallel with the ground and do not let those hips sag. Pull your belly button in towards your spine to maintain a tight core.
Try to hold for at least 30 seconds and work your way all the way up to 60 seconds. Then you can try to get up to two full minutes.
(Jon Doyle is a former NCAA All-American baseball player who now works as strength and conditioning specialist. For more tips check out www.baseballtrainingsecrets.com)