Hand Release Push-up with back extension is a base strength exercise ideal for warming up, it activates the core and uses upper body strength. It is not only a great base strength exercise but is also a good way of warming up before you start your session as you will need to activate your core but at the same time will also need some upper body strength to complete the exercises It's an underrated & highly effective exercise in warming up, rehabilitation and strength & core maintenance. (function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_US/all.js#xfbml=1"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk')); Tweet