Hammer training first and foremost is damn good fun. With a beastly Power Hammer you have no need for stress counselling or pretending the self help books in your basket are for a friend. You can feed the caveman within and let your inner warrior shine! Just add a large serving of tractor tyre and let them simmer nicely for 10 minutes. For core strength- work those air strikes and rotation drills. You will not believe how effective these brutes are for your cardio and upper body strength. Worried about the legs? You can also flip the tyre or put a set of burpees in between strikes. Just make sure you hit it very hard- they are built for abuse.