How to Make Four Good Exercises Great

  1. Plank - Once you have your body in a long and strong line, squeeze your buns and pull your inner thighs together (without moving your legs). Now you've got every muscle activated and it's truly a full-body exercise. (Quick check: Is your head aligned? See Push-ups below.)
     
  2. Push ups - Before you start and during each repetition, be sure you maintain a straight line from your heels all the way to the top of your head. Many people let their heads hang. This is a common mistake because it makes the exercise easier. A hanging head also reinforces the dreaded "forward head poke" position (today mostly caused by peering at our cellphones). For push ups, and all exercises, keep your ears aligned directly over your shoulders.
     
  3. Hamstring stretch - Whether you're stretching your hamstrings from a seated or standing position, keep your back straight and hinge forward from your hips. The rounded back and nose-reaching-for-the-knee approach was standard in the Jane Fonda era. But now we know that hip hinging gives a superior stretch and also helps practise good upper body posture.
     
  4. Biceps curls - There's more to curls than lifting weights up and down. Before you start, lift your ribcage and brace through the core. Then hold an imaginary piece of paper between each upper arm and your torso. As you curl the weights up and down, don't drop the paper! This approach isolates your biceps muscles and doesn't let additional muscles or momentum help out.