Doesn’t have to be one more booty-busting interval workout or one more 2-hour ride. In fact, it probably shouldn’t be. Just add another notch to your “worked out today” belt.
Great one to add: As many minutes as you can stand (that’s going to be at least a few more seconds than you think you can!) of front and side planks. These don’t just give you nice tight abs, they also help you function better when you’re sitting at your desk and moving through space.
Rusty? Check out Bob Harper’s tips for doing planks right, so every single second counts.