Bodyweight Exercises for Cyclists: The Plank
How to do the Plank:
To perform the Plank, start by lying on your stomach. Your hands should be together, right in front of your face, and your elbows should be below your shoulders.
Then prop yourself up on your toes and forearms. Hold this position, keeping your body in a straight line. Be sure your abs are pulled in tight, and do not let your stomach drop towards the floor. (Don't stick your butt up in the air either.)
Hold the position for 30 or 60 seconds, or maybe 5 minutes if you're good. Then do a couple more reps if you can!
Why you should do the Plank:
The Plank works your entire core and practically your entire body. It also improves your mental focus.
P.S. That's Steve's t-shirt hanging down to the floor, not his gut! ;)