Stand with your feet hip distance apart, holding a TRX handle or ring in each hand, palms facing each other. Walk your feet forward until your body is at a 45-degree angle to the floor, arms fully ...

The modern-day gym floor is littered with hulking, intricate, alien-looking contraptions that can confuse and/or intimidate even the most diligent Pumping Iron–type wannabes. (Take the Skillmill ...