It will open a random wikipedia.org article.
In How to Make Easy Exercises More Difficult and More Effective by TC from T-nation he gives us a few ways to save time by making some exercises more difficult. I really liked:
Let me ask you a question: how often in your life do you walk up to an object hanging from a tree, carefully place it on your shoulders, and lower it to the ground?
Hunters typically don’t find dead deer hanging in trees. Generally, the thing’s lying on the ground and they have to pick it up.
What I’m trying to get at is the conventional squat is screwed up. It’s not a real-world movement. Our entire motor program, from childhood on, was developed to pick things up from the ground instead of the opposite.
That’s probably why a lot of people have trouble learning how to do the squat.
Well, I’ve adjusted the movement. I’ve made it more “real world,” but in doing so, I’ve also made it harder — and consequently, more effective.
I rarely start my squat from a standing position. Instead, I place the loaded bar onto the safety bars of the power rack and start from the ass-down position.
Guess what I’ll be doing next leg day?