No Pain, No Gain

For the exercise-averse, good news! Researchers say that a mere three seconds of resistance training a day could boost our biceps by 12 per cent. Meanwhile, The Week asked its readers to name a workout regime that requires the absolute minimum level of effort.

• CrossSit

• AutoPilates

• Chairmaster

• Gluteus Minimus

• Chillates

• Zzzzzumba