So what is Bell's method to fat-shedding and muscle making? His transformation plan is focused on 80 per cent eating right and 20 per cent exercise. Contestants submit their measurements for 12 key body points, plus their weight, and will be provided with an eating plan of six meals a day, "calculated down to the gram", says Bell.
He reckons contestants will be surprised to learn how much nutrient-rich food they'll get to eat. He has been called "the carb Nazi", but he allows some carbohydrates (the low GI kind). Coffee is okay. But if you want chocolate then you'll likely not win this gig.
Once participants have signed up, Bell plans to offer some social - that means real life - bootcamps in various locations.
Bell says the judges are looking for the ultimate "transformation", not necessarily the biggest fat loser, adding that the person with the best before and after "look" will likely be noticed by the judges.
But then they'll have to charm the ZM listeners for the big prize.
Bell admits folk who lose the most fat will get a lot of "sympathy votes".
"Really, anyone could win," he says."It's about the best mind and body transformation."
Asked if he was intending to hurt participants with his training, Bell jokes, "no, they will hurt themselves." He means they will work hard at sticking to the food and exercise plan.
The programme eases participants into things for two weeks before starting a five-times-a-week routine of 45-minutes' walking and hitting the gym for 19-minutes - that's 1140 seconds.
"You don't have to live in a gym to get results," he says. "But participants will work out every second of those 19 minutes they train, isolating muscles with repetition weight sets, a stopwatch counting every second."
Participants have access to lots of support online and through the Legion Training facebook community.
"The person who doesn't cheat is going to be the person who wins," he reckons.
• To sign up go to bridalbootcamp.me
• Follow Rachel on Twitter
Lake Taupo Cycle Challenge training
You need a bit of grunt and a bit to spare to enjoy the 160km ride around Lake Taupo. Ideally you'll be training at least four times a week and increasing your distance, speed and range of topography. Amy Taylor says developing endurance is the basic building block for training for the solo ride. Her advice - plan to complete at least one ride of 120km before event day. Start out riding on flat roads then add the hills and avoid having more than a four-day training gap.
Endurance training improves your aerobic fitness and with this you can:
• Ride for longer with less effort.
• Ride faster for the same effort.
• Produce more power.
• Utilise fats as an energy source.
• Lose excess body fat.
• Recover faster from training.
• Enter online at cyclechallenge.com
Lianne Fraser