Here's a list of exercises you should avoid if you are not advanced. It's not worth the risk of getting hurt or making a fool out of yourself.
|Full straight leg sit-ups
|Deep Squats (knee bends)
|Full cobra Pose
|Double leg raises
|Hopping more than 8 times in a row on one leg
|Behind the neck pull ups
|Falling off a treadmill from running too fast or not paying attention.