At the point of sale, the merchant would calculate the amount owed by the customer and indicate the amount, and may prepare an invoice for the customer (which may be a cash register printout), and indicate the options for the customer to make payment.
Performing push-ups works a variety of muscles in your upper body, including specific muscles within your abdomen, chest, shoulders and upper arms. You can vary your technique by placing your hands at different widths to emphasize one area over another.
The push-up demands a lot of muscle stabilization as you lower and lift the weight of your body. Your erector spinae group is the main stabilizer of your back. It is made up of three muscles: spinalis, longissimus and iliocostalis.lthough it focuses on two muscles, all your muscles must work to move your body up and down as you hold your own weight. It is an amazing upper body exercise and an excellent total body workout, challenging your core at all times. If performed regularly, push-ups will promote muscle endurance and overall fitness.