Stairs
If you want to stay close to home, why not walk the stairs in your house, your apartment building or even at a nearby park. Strap on your fitness pedometer or set a goal of 500 stair steps every night. You’ll build leg strength, get your heart going and work up a little nighttime sweat.
Squats
Squats are a go-anywhere exercise with a lot of impact. Before tucking in, stand next to your bed and do 100. Once that gets too easy, grab something heavy and weigh down your sets. Work up to 300 and finish by dropping your tired body on the bed.