More often than not we tend to use the same shoe for the entire year, if not more. Not only should your shoes be changed out as normal wear and tear occurs, your shoes should also correspond with the activity or training for that day.
Squats may be the most effective and definitely one of the most effective exercise for just about any program however preforming this exercise inaccurately can leave you underwhelmed or even injured.
It's the New Year and more than winter is coming to your local gym. Don't let the resoultion-ers deter you, learn ways to cope and maybe even help a fellow gym goer.