Use standard barbell press technique; don't splay elbows out to the side
excessively, use shoulder width grip, use a tight grip, keep wrists as straight as possible, bring the
weight down to the chest using full range of motion or what your flexibility allows without pain, lower the
weight down slow and press up
faster, contract abs, glutes, and chest simultaneously while pressing, slower the
weight down controlled and slower than you are pressing up, inhale on the way down and exhale while pressing up.