One definition of insanity is doing the same thing over and over again but expecting different results. This overused pop-culture quote, misattributed to Albert Einstein, holds a lot of truth for many people who spend hours, weeks and months exercising yet find they’re going nowhere slowly.

Think about this: have you ever seen a father who runs 10km every Saturday attempt to play a game of touch rugby with some of his son’s mates? More often than not, within five minutes he is crouched over his knees saying something along the lines of: “I’m getting too old for this nonsense.”..

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