Road Work
Stay fit while you travel with this 35-minute, weight-free routine

THE WORKOUT:
Push-ups Do as many as you can in 30 seconds. Rest for one minute and repeat twice.
Reverse Crunches Lie on your back and bring your knees to your chest as many times as you can in 30 seconds. Rest for 30 seconds and repeat twice.
Windshield Wipers Lie on your back and raise your legs straight up. Lower them to the floor on one side, then raise them over your center and down to the other side. Continue for one minute. Rest for 30 seconds and repeat twice.
Forward and Side Lunges Start at one end of a hallway, step forward into a lunge, and lower your hips until your front thigh is parallel to the ground. Bring your back leg forward until you're standing, then lunge with that leg. Continue until you reach the far wall. Turn 90 degrees to your right and side-lunge back to your starting point, leading with your right leg. Do another length of side lunges back to the far wall, this time leading with your left leg. Turn and do one more length of forward lunges.
Stair Bounding Start at the bottom of a staircase of any size and bound up two stairs at a time (three if possible). Turn and descend as quickly as you can. Continue without stopping for two minutes. Rest for one minute and repeat twice.
Stair Sprints Start at the bottom of the stairs and sprint to the top, hitting every step this time. Walk back down at a moderate pace. Continue without stopping for two minutes. Rest for one minute and repeat twice.