Facing down, with your forearms on the floor and your back and legs straight, extend one of your arms and then the other, to end up in a push-up position. Go down in the same way you went up to complete a repetition.
triceps, chest, biceps, forearms, dorsals
quadriceps, femoral, calves
biceps, dorsals, core
legs, buttocks, calves, femoral, quadriceps
core, lumbar, obliques