As a group fitness instructor I see a lot of people doing the same thing at the same time. That way you really notice the little differences, little variations people create to make things easier or because they don't fully understand what they should be doing and which muscles they should be using. There are things that I see happen over and over again so I decided to hand you a little tip, a suggestion if you will. Just one at a time so next time you're in your workout you don't have to think of a million things at the same time and can't get a single one right because it's too much.
If you have any other suggestions, post them in the comments below so other people can read them as well. Thank you.