The kettlebell: much feared and with good reason. Well, sort of.

Introduced to the West by a pretty heavy Russian Spetznaz dude (Pavel Tsatsouline) and a whimsical, but ferociously strong, American guy who is older enough to be a grandpa but can still do one-handed pull-ups (Steve Maxwell) – so the story goes – the iron ball and handle is actually the perfect accoutrement for anyone wanting a super-quick, super-intense workout.

In short, this piece of kit was made for Super Fit Dads (and Mums).