Tracey burned off round 1,500 energy in a median day, or 1,700 on her most lively days.
Volunteer Curtis burned round 2,200 a day, a lot fewer than the NHS suggestion of two,500 for a person.
Dr Mosley added: “The research we have executed with our volunteers present most of them want 200 to 300 fewer energy than the NHS typically recommends.
“So I am not satisfied these tips are helpful for everybody.
“With the NHS tips, I feel they are often useful for some, however for our 5 volunteers I feel they want a extra tailor-made method based mostly on their BMI and exercise degree.”