| Other things you could add in as weekly challenges to keep it interesting: theyare honor system based.. but if you trust them - and these are all ideas from our halloween challenge last year - read thru the challenges forum for more of the rules
A five a day challenge - where people get bonus points for eating a minimum of five fruits or veggies a day
A water challenge -where they have to drink X amount of water a day
to encourage exercise as well- you could also do a walking challenge - where people have to contribute x amount of miles a week..
just be creative - | 
