Push-ups work muscles in the arms, chest and shoulders, including the triceps muscle. Learn about improving overall upper body strength with push-ups withhelp from a strength and conditioning specialist in this free video on exercise and fitness tips. Expert: Ashleigh Gass Contact: www.brilliantathlete.com Bio: Ashleigh Gass is a certified sports performance nutrition adviser and a certified strength and conditioning specialist. Filmmaker: Christopher Rokosz … exercises fitness tips training …