Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to exercise at your desk [title] Work your chest with desk or wall push-ups. [step] An easy exercise that you can do at your desk are push-ups. Using either the wall or your desk (depending on your fitness level), you can perform this exercise to help strengthen your chest, shoulders, and arms.

Ending1: [substeps] For example, you could do push-ups with a t-shirt on and a little extra weight over your biceps to build up your chest strength. [title] Get up from desk and push-ups. Ending2: You can also perform this exercise at home or at the gym. You can put foam palms on your shoulders to increase the force of your push-ups. Ending3: [substeps] If you don't have a lot of upper body strength or are just starting out, try a wall push-up first instead of the desk push-up. Begin by standing about 1-2 feet away from the wall. Ending4: [substeps] Lifting heavy objects such as a large desk can tire you out greatly. Instead, place something cushioning, like a pillow or exercise ball, in the gap between the back and desk base.

Answer format: ending1/ending2/ending3/ending4