When the weather's bad or you can't leave the house, or when you're stuck in a hotel room with no gym nearby, use your body weight as an exercise opportunity! This video shows a number of ways to get yourself moving and strengthen your muscles. They look easy because the woman doing them is very strong and functional, so don't dismiss this menu as "nothing." The first time I did these, I was indescribably sore -- I could barely walk or even sit down. They have now become a staple for me and a way to break the tedium of being cooped up with no possibility of taking a walk or getting fresh air.