Start from a neutral position - straight line through your body from your heels to your head. Activate 'trans abs' and 'glutes' and pull your shoulder blades away from your ears.
Tempo
2-1-2-1 = 2 second descent, 1 second hold at end range, 2 second push-up, 1 second hold at start position.
Breathing
Breathe out gradually as you push up and in on the descent
Spotting
Use at least one spotter next to you at first to assist if you start to lose balance
Key Points
Maintain neutral alignment. Do not allow your back to extend or flex from neutral.
Variations
Raise one leg a few inches off the ground and hold - nothing else moves! Plus, perform push-up with one leg off the ground