Leg lifts are great at keeping your back, core, and lower body strong.
1. Lay On Your Side
To setup for this exercise, lay on your side, place one arm under your head for support, and place your top arm out in front of your torso to stabilize yourself. Tighten your core.
Begin to lift your top leg slowly and with control as high as is comfortable for your level of flexibility. Lower your leg slowly to the starting position.
You can do 3 sets of 20-30 reps for each leg. You can also use variations to engage slightly different muscles by moving your foot slightly in front or back of the bottom leg. This exercise can also be performed while in a side plank position for more of a core challenge.