Ben Shires joins the circus to see a strongman take on an amazing record, juggling some truly gargantuan tyres. Can man-mountain Hercules summon all his strength and muscle his way into history or will this prove a task too far?

And if tyre-juggling has you in the mood for heavy records, we've got lots more, including the heaviest weight lifted with toes, the heaviest bird and the heaviest tongue in the world!

American host Al Jackson is in Las Vegas to meet a man who holds an astonishing world record for making sandwiches with his feet. Rob Williams has incredibly dexterous toes and is able to make a baloney sandwich (made of bread, mayonnaise, cheese, mustard, baloney, lettuce and a pickle), without touching any of the ingredients with his hands!

The heat is on in Officially Competitive where the superstar record-breakers will be competing to sort jelly babies - with chopsticks!

And in Wales, 71-year-old great-grandfather Ray Woodcock, vies to smash the record for the highest bungee jump into water. Or will he come a cropper when he hits the water from over 120 metres? Show less