Men's Over-40 Holiday Workout

If nothing else, the holidays are fraught with stay-in-shape obstacles. All those days off, family dinners and work parties can make it close to impossible to maintain your post-40 battle against belly fat and man boobs. The solution: This quick, do anywhere, high-intensity circuit exclusively created for That's Fit by Mark Stallman, a personal trainer at Chelsea Sportscenter in New York City. "Do it at the gym, in your den, on the road in your hotel room – just do it," said Stallman. Aim for three times a week to help you maintain testosterone levels, build muscle and bone density, stay loose and keep your engine humming at high all season long.

You'll need: A pair of 10-25-pound dumbbells and a jump rope.

The goal is to complete the circuit with no rests in between. Except for the planks, do 12-15 reps of each move. If you need to take a breather, try to keep it to no more than 30 seconds so your heart rate stays elevated. Then do it two or three more times; whatever you can finish in 30 minutes. Take no more than one minute in between rounds.