Here is the thing. Yes some of these exercises look scary. The first time I saw someone do the one leg squat my reaction was - you have got to be kidding right? Except the person I saw doing it was a 5 year old kid at his Karate lesson. He was competing with his teacher - a buff guy in his 30's - to see who could crank out the most reps. The 5 year old won by the way.
The really important thing to remember is that you have to take on things that look scary now and again and push yourself out of your comfort zone. I know this lady that has an expensive treadmill at home. She walks on it religiously twice a day. It's great to see her taking the time from her busy day, but when I inquire why she doesn't try one of our 12 minute workout routines and save herself an hour of walking, she says that she doesn't like to sweat. So she walks the hours away each day, but she has not improved her fitness level or changed her body composition along the way. Sometimes comfort can be a drag.
Usually it just takes a gentle nudge to get people to try something new. There are always ways to "train up" to being able to do anything. Every time we put these tutorial videos together we try and fill them with these nudges - to show you that you can start with the easiest possible variation of an exercise and still get amazing benefits. The trick is to catch yourself from tuning out and getting comfortable when you first encounter something new that looks on the surface to be impossible. If you have a chair at home you can do a one leg squat. Take it on as a challenge and for gods sake don't be afraid to sweat.