If you currently earn a living (or scholarship) by playing a sport, and want to improve in that sport, you should probably be doing box jumps as a training modality while avoiding them as a display of awesomeness. And that includes repeated box jumps for time.
|Most serious athletes need only concern themselves with the center of gravity.|
They can do this without the cool/risky circus antics.
World-renowned strength and conditioning coach Mike Boyle recently claimed that box jumps over 30-inches are foolish. He said they're done by those looking to show off and/or get a skin graft, and athletes can achieve a tremendous training effect while saving themselves unnecessary risk by using a far more conservative, unimpressive box. He emphasized landing well in the position that you jumped from (without the extreme tuck). On all of these points I agree.
BUT the other half of the coin...
"Do you see how high that thing is? Well now he's standing on it."
Did you ever visualize the world as a series of challenges where every desk, platform, wall, and fence is classified as something that you could or could not leap onto or over? Yeah, neither have I ; ).