I second Aletta Armee's suggestion on using a bench or a chair if you need to modify your squats.
Also, if you run into any "Squat Hold" exercises in other workouts I would recommend the Wall Sit instead of a Squat Hold to make it easier on the knees. Wall Sits are still killers on the thigh muscles, of course. They also help to strengthen the knees.
Commented on JRD Jump Rope & Dumbbell Program - Month 1, Day 2: Total Cardio
14 Jan 12:04
Hey Dan, I recognized the workout immediately! I was like...wait a minute, this was Month 1 Day 2 of JRD MAX! Haha, guess we're running through this one again after a day with dumb bells instead of a day of push ups and pull ups