The 46-year-old singer took to Twitter to share his health plans.
"Goals for this week: Really top up on the green veg, get more beans into my meals, consistently stretch twice a day, find time for meditation drink water amen (sic)" he tweeted.
Barlow, who shares three children - Daniel, 17, Emily, 15, and nine-year-old Daisy - with wife Dawn, has always been particular about his fitness regime.