According to the Daily Beast, a guy called Gregory Ferenstein replaced his regular trips to the barista with short bursts of intense exercise, News.com.au reported.
Ferenstein wrote in a post that whenever he needs a "pick-me-up", he finds a quiet corner and perform some form of body-weight exercise that jolts his heart up to at last 70 per cent of the maximal beats per minute.
He's been using the brain-training experiments at Quantified Mind to test his reaction time and short-term memory after the bursts of exercise, compared with coffee.
He found that his mental performance was 12 per cent better after a mini workout than on a coffee high.
--ANI (Posted on 04-12-2013)