A recent illustration I completed focusing on the pushup - one of the most functional exercises to master correctly. I remember a time back before I joined the gym when I was unable to do a single pushup on my toes - they are now one of my favourite movements! It's amazing how a few little tweaks and adjustments to form can really make so much difference to your results when performing an exercise.
After a challenge? Check out this blog from lululemon athletica with 82 different types of pushups to master! Which is your favourite?