Even as a barre instructor, I totally understand the struggle to make time for working out. It's a struggle just getting out of the house most days.. If I wasn't "forced" to workout by teaching 3 times a week, I would have a hard time doing it at all. SO here are some super simple workouts you can do in that precious naptime. All you need is 5 minutes.
You can find my yoga mat here.
Starting out in a plank, jump bringing the knees into your chest, then jump out, open the feet, then close the feet back to starting position.
Do this 15 times.
Same plank, keeping the hips down, back flat, alternate bringing the knees into the chest. 15 sets.
From a plie (legs apart, heels in toes out, knees tracking straight over the toes), lunge to the right with both knees 90 degrees, small lift as you come back to center then plie, then lunge to the left. This is one set. Do 10 sets.
Plie Squat Jumps
With the same plie squat, making sure the knees are tracking straight over the toes (very important!), squat tapping the floor and then jump. 15 sets.
Bending one knee, with the other leg extended as if you were going to do a stretching lunge, place the finger tips on the ground with the back flat and tap your toe to the floor then lift. This is one set, do 20 sets each leg. Keep the standing leg stable with the knee going straight over the toes. You should feel this in your quad as well.
Come onto all fours, you can also come down onto your forearms to give your wrists a break, hips stay square to the floor and back stays flat. Lift the leg straight up, with the knee down and toes up, then lower back down. This is one rep, do 20 reps each leg, 2 times. Try picking up the pace with this exercise to keep your heart rate up.