To lose 20 pounds in 30 days, you are going to have to burn a lot of calories and watch what you eat. You are going to have to get off your butt and do some exercises that will get results fast. If you try to lose 20 pounds in 30 days by starving yourself, you will not get lasting results.
The whole point of losing weight is to keep it off and not yoyo up and down with the same weight. So why try drastic solutions that will only provide temporary weight loss when you can use a little more discipline and achieve lasting results that you can be happy with for years.
Even celebrities who go on strict diets like the lemonade diet or apple cider vinegar diet eventually have to go to a more sensible diet plan. Strict diets that restrict most foods are not healthy long term.
The key is to stick with a diet plan that you can live with for the rest of your life.
Besides, what good is making a good first impression on a first date when the next time you are 5 or 10 pounds heavier and not as attractive as you were on the first date when you were starving yourself?
You do not have to be in the gym all day to drop 20 pounds in a month but you do have to do some short intense workouts. One way to do this is with kettlebells. You can get your cardio and resistance in at the same time burning fat and building muscle at the same time.
You also need to add tons or lean protein to your meals. This will keep you fuller longer which will prevent you from overeating.
With a little discipline and a lot of hard work, you can easily lose 20 pounds in 30 days