Lift those legs on your bed, do 3 sets of 15-20 reps.
Alternate knee-to-elbow, 3 sets per side.
Hold for 30-60 seconds, 3 sets.
Twist torso side to side on your bed, 3 sets of 15-20 reps per side.
Run in place for 1-2 minutes, 3 sets. There's no need for you to get up from your bed.
Work that belly out from the comfort of your bed. Cross legs in a scissor motion, 3 sets of 15-20 reps per leg.
Lift hips, hold for 30-60 seconds, 3 sets.
Hold for 30-60 seconds on each side, 3 sets per side and you'll be good to go.
Lift arms, chest, and legs off bed, 3 sets of 15-20 reps.
Hold for 30-60 seconds on each side, 3 sets per side and you'll be good to go.