The first thing you want to focus on is your core.
Watch the full demonstration above.
"You want to make sure when we get down into that pushup position, we've got tight abs, we tense through our quads and tense through our bum. Our hand position is in line with our shoulders," says Liubinskas.
"When I come back down, chest to the floor, my quads are off the floor and push. Same thing again - come back down, tense, and push."