Summer's here and it's all about the six-pack!  It's time to get down and sweaty and work on that core!   When you hit the beach this summer, the last thing people will be looking at are your enlarged triceps.  Their eyes will go straight to your stomach, so get working and start chiseling those abs!  Take a look at these 6 exercises by Gregg Cook of Equinox that will help you get results!