Lie flat on the bench so that your head, upper back, lower back, and both feet are firmly pressed against the bench and ground at all points while holding two dumbbells at your chest with your palms facing each other.
Exhale and push the dumbbells straight up, keeping your elbows tucked in.
Continue pushing the dumbbells up until your arms are fully extended.
Inhale and bring your arms back down, returning them to the starting position.