Can you exercise??? Heck yeah.... Runners still do 5 and 10 miles a day while cleansing on this... Its amazing... My mother... How I just don't know... just dod 29 days and she works 5 days a week, she is 56 years old. She goes up and down stairs all day ushering clients all over the place. She never felt drained, in fact, she was the only one at work glowing and bouncing around! lol She had more energy than the rest of her coworkers did! She really wanted to keep going she felt so good! But had lost so much weight it was problematic for her work wardrobe, so she had to break her fast. She still had to go shopping though. Poor mom

She has been doing them since I was a child. Same booklet! Same fast... Always by the book!