20 squats, 8 squat jumps – fast squats and fast squat jumps
20 side to side lunges – fast, 8 sumo jacks (jump feet out into wide stance and squat down, feet turned out 45 degrees knees follow midline of foot)
20 forward lunges

(in all sets above, one foot equals one rep)
Repeat 3 x

Beginners mod for above:
-remove the squat jumps in the first exercise set.
-remove the sumo jacks and replace with half jacks (step one foot out at a time to the side)

Standing on a stair edge, with or without weights.  Beginners, do not use weights.  Intermediate try 5 lbs in each hand.  Advanced, try 8-10 lbs in each hand.  Extreme-ists: try 15-20 lbs in each hand.

Calf Raises:
Both feet – 16 raises
Left foot, 16 raises
Right foot, 16 raises

Hamstrings: lie on floor, bend knees, lift glutes.  Raise left leg and extend, keeping knees and thighs parallel to each other.  Lift and lower glutes working the hamstrings of the right leg.
Do 12 lift and lower on right leg
Do 12 lift and lower on left leg
Do 12 with both feet on floor, lift and lower glutes
Repeat: 2nd round add a pause at the top of the raise after each raise.

Wall Squat: back against the wall, slide down until knees are at 90 degress.  Hold this position for 60-90 seconds.
Advanced modification: add bicep curls

Core:
Plank sequence:
30 seconds in freestyle plank (your choice!)
Rest for 10 seconds
Repeat 4 times, feel free to change the plank style each time
Side Plank left – 30 seconds, rest for 10 seconds – do 3 times.  Then do on right side.

Lie on back, legs straightened.  Palms under glutes.  Lift legs 6 inches off floor.  Hold for 15 seconds.  Rest for 10 seconds.  Repeat 4 times.