I was running on a treadmill I got for free, but my knee is mess up and I can’t even handle that. I’m looking for a free stationary bike to keep up on my cardio. But what are some effective workouts to do without any equipment? I just recently started with 3 sets of 20 push-ups, 3 sets of 20 lunges, 3 sets of 15 squats, 3 sets of 20 knee to elbow touches. Any input is appreciated!
Russian twists!
Yoga! (<-- very important to prevent cramps)
Planks!
Chair dips!
Leg lifts!
Crunches and Reverse Crunches!
A lot of these are core, but core strength adds to every other strength so you should train it every time.