I do them every other day. It gives you time to heal and you will be able to re-shock your penis and get faster gains. If you do girth everyday you are most likely going to get fatigued and you won't gain as quick.
I on the other hand have gained significantly from doing some girth work every Penis Enlargement day. I usually take a day maybe 2 off on the weekends to fully recoop. I believe as long as you are doing kegels you have no problems with weakness or lack of blood flow needed to heal.