I'd venture to guess that upwards of 75% of exercisers use bad technique when they train. The reasons for sloppy form are many, but the results are always the same: a ceiling on muscle growth and strength gains -- or worse, injury.
To combat this issue, for the last couple of years I've been doing a weekly #FormCheckFriday series on Facebook, highlighting common (and sometimes very subtle) technique mistakes through side-by-side video comparisons.
Muscle & Strength was so impressed with my work on this important issue that they asked me to develop a complete article series on the subject. Here's the first installment, Is Bad Form Stealing Your Gains? Here's How to Prevent it: