We have to remember that we need to cleanse our minds, too! To often we focus on achieving optimal bodily health (the societal expectation of the "perfect body") and not enough on making sure our minds achieve optimal health.
To do so, we should focus on happiness and peace; what achieves this for us? Is it dancing to our favourite song or spending time with those we love the most? We could enjoy a massage, or a day out with our friends. I often "detox" my mind by listening to my music, or having a drink with a friend! Tom and I also talk about how we are feeling, and relay our ideas off of each other - even planning for the future relaxes my mind and creates a cleansing sense of happiness that lasts!
This is then, of course, motivating to keep the other part of the equation - the body - in good health, too! We should always have the health and wellness of our mind as our top priority... and trust that the whole "healthy body" thing will come once we achieve clarity of our minds!
Namaste.