Rather than deleting your post, I will comment then close.
We do not support unhealthy diets here, one of which is "the master cleanse" aka "lemonade diet'. It is basically a fad liquid diet that has been around for a long time with no backing on safety or need. Also, your body doesn't need you to drink something external to cleanse itself. I will just advise caution but it is not something we allow discussion of on this forum as it is not deemed healthy.
You can't out-exercise poor eating habits.