If this class wasn't so damn addictive and effective we'd probably ban it because we're torn between loving it and hating it. Either way the end result is rapid improvement.

Believe it or not, dumbells are actually optional in this workout and you'll see the same benefit from water bottles, milk cartons or canned goods as you would from dumbells. Form and repetitions is your key to unlocking strength.

The sweat underneath you defines this journey on the long road to nowhere. The destination though is worthwhile, stay the course and realise some impressive fitness gains.