20% of people who participate three or more times a week say they are content with that amount, while 13% who participate three or more times a week would like to do still more.
Dywed 20% o bobl sy'n cymryd rhan dair gwaith neu fwy yr wythnos eu bod yn fodlon ar y swm hwnnw, tra hoffai 13% sy'n cymryd rhan dair gwaith neu fwy yr wythnos wneud mwy fyth.