Shaun if i may make a suggestion, When it comes to karate i am only a purple and white belt having passed recently, but perhaps i can offer an op...

Shaun if i may make a suggestion,

When it comes to karate i am only a purple and white belt having passed recently, but perhaps i can offer an opinion as to why one should exhale on completion of a technique. Whenever you complete a hard physical task, for example lifting a heavy weight, your blood pressure increases. Holding your breath in during this time further increases your blood pressure. If ever you have lifted a heavy weight you will understand that it is easier to lift if you blow out hard rather than whilst holding your breath. The same principle applies here. If a punch is fast and hard your blood pressure momentarily increases. By exhaling on completion of the technique you help lower your blood pressure a little, thus keeping it relatively constant, and helping you maintain a higher tempo of activity for longer.

What do you think?
Josh

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