Though the burpee has become popular, you've probably never seen this option. It'll give you a far better upper-body blast than the traditional hop-in, hop-back burpee.
Burpee Walkout
Keep your legs as straight as possible on the walkout and the walk-back, and alternate between arms.
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Partial Overhead Press
Some call it the ultimate triceps movement, others call it, "that exercise that hurts the top of my head and makes me see birdies." Either way, you ought to be doing Partial Overhead Presses.