Mr Motivator will be joined by Linda Lusardi for a week-long workout to raise money for older people during the coronavirus pandemic.
The fitness guru, 67, is supporting Age UK’s Emergency Coronavirus Appeal, which aims to raise £10 million.
He has also enlisted Rustie Lee, Christopher Biggins and the stars of The Real Housewives Of Cheshire.
Lusardi, 61, contracted coronavirus alongside husband Sam Kane, and spent 10 days in hospital suffering from fever, chronic chest pains and vomiting.
Mr Motivator, real name Derrick Evans, will broadcast daily 15-minute workouts between May 4 and May 8 on the Ideal World channel.
In line with social distancing measures, guests will record their contributions from their own homes.
Mr Motivator said: “It’s a challenging time for us all at the moment.
“But none more so than the older generation, many of whom are feeling particularly isolated.
“Fitness is key to being able to maintain both your health and independence.
“That’s why, with the nation’s help, I hope my new lockdown workout sessions will help to raise significant funds for Age UK’s appeal.
“We may not be able to be together but together we can #workitout.”
Lusardi said: “I know at first hand how debilitating this disease can be.
“It is important to keep your fitness levels up. You know what they say, ‘a healthy body, equals a healthy mind’, which is so important at these uncertain times.
“That’s why I’m looking forward to supporting Mr Motivator this week in raising funds for Age UK.”
Donations can be made at idealworld.tv/workitout