I agree. If someone wants to lose weight or become healthy, it's not something you can do every now and then. To be effective, your whole lifestyle needs to change....
I used to be a fitness instructor back in the day. Everyone came into the fitness center wound up and ready to start a healthy chapter in their lives. But after they found out how hard it is to create a healthy lifestyle, 90% of them dropped out and went back to sitting on the couch with potato chips...