We love integrating movements to challenge balance and build strength. Start seated and move to a standing position. Sit back down. Now stand up and move right into a march position and try and hold it for a second, or a few. Put your foot back down and sit down. For a real challenge try sitting down with your leg still up. This is very hard, be careful. Now stand back up and move right into a "butt kick" or heel lift toward your bottom. Sit back down. Repeat 10 reps on one leg of each movement or alternate. The key is to move from sitting right into a march or butt kick with a hold without having to touch down.