I recco doing what Tank has suggested, using a no-rest style for the extra cardio benefit. You could also do planks for core...so try doing one set of each excersise to failure, rest 60 seconds, then do it all again, and again, and again, etc...repeat until you're beat down and unable to hit one rep for any of them..
Mt Snow, VT - May 5, 2012 - Completed!
Gunstock, NH - June 1, 2013 - Completed!
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