A spa in Kings Langley has appeared on Channel 4 for its infra red exercise bike which helps you lose weight.
Cheek Medispa was on the TV show How To Lose Weight Well which aired last month.
Spa manager Gemma Depiano found the infra red bike in Italy last year and claims it is first to be used in the UK.
She said: "The machine (bike) resets the body and changes the way the metabolism behaves."
"The spa was approached by Channel 4, and also the BBC a few months ago.
"I guess they both loved the concept and the science behind it.
Infra red bike at the spa
"Everybody has been bit sceptical but the best thing about the show its backing up what we have been saying."
In the show, Dr Xand Van Tulleken, stripped down to his underwear and pedalled the bike for 40 minutes surrounded by infra red lights.
The bike uses sensors to measure heart rate which trigger pulses from the infra red which causes the body to continue to burn fat for up to 24 hours afterwards.
Ms Depiano said: "It was really fun and I was nervous. Dr Xand had to strip down to his pants and cycle so he may have felt more intimidated than me."
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