Start in a high plank position with your hands placed slightly in front of your shoulders and your body forming a straight line from head to heels. Keeping your elbows tucked close to your body, bend your arms to lower your upper body toward the floor. Your forearms may approach or touch the ground depending on range of motion. Push through your palms to extend your elbows and return to the plank position, focusing on squeezing your triceps at the top.
Log your bodyweight triceps extension from plank position sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.