Remember when 'aerobics' was all the rage? All that waving and jumping... all that Lycra!

Well, (chiefly thanks to the annoying Dr Kawashima's Brain Training for the DS-Lite), "Brain Training" is the new rock and roll; but you don't need to spend a penny to maintain the health of your brain, and there are two other major plus points too:

• it can actually do you some good;
• no Lycra is involved.

We thought, with Christmas just around the corner, you might be feeling a little brain-swamped and would enjoy a decent (free) Brain Workout. So, here's a smart 20 minute callisthenics work out from Time.com. Enjoy!