Any diet that eliminates processed foods, foods with high fat, salt, sugar content, or high calorie foods for a few days will definitely result in feeling better. And you can feel energized by simply avoiding all junk and processed foods and eating healthy - you don't need a juice or a liquid diet or colon cleanse or give yourself enemas to detoxify your body.
Note - no study has corroborated that detox diets actually remove toxins from the body.