*Please excuse the uber-sexy man, I don't have a bosu at home & wasn't about to take a pic of myself at the gym
I definitely recommend using weight if they are too easy. You want to do 2 sets of 25 on each leg. And as always be sure your front knee doesn't pass your toes.
SQUATS
After the lunges, go directly to these. Grab whatever weight you usually curl (between 5lbs & 15lbs in each hand) and stand like our cute gal..."Sally" below:
Be sure to not let your knees pass your toes. Do 3 sets of 15. For extra credit: after you do your 15th sit in squat position & hold while you do 15 curls with the hand held weights you have. Your legs will SHaaaaaaAAAke!
Hammy's
Lastly we have the Hamstring curls. These babies are painful (for me). Lay flat on your back, place heels on ball: butt raised so that your body is a straight line from head to toe. Slowly pull in ball towards yourself, without letting your butt lower. Make sure your hands are relaxed at your sides and all the work is in your core, butt, and legs(mainly hamstrings). Slowly push ball back out.
Do 2 sets of 25
Feel the burn baby!!
Happy to be Healthy
Mari