it sounds counterproductive but drink lots of water and stay hydrated.
If your body is getting a lot of water, your cells are going to say, hey we have plenty of this stuff coming in, lets not hang on too as much. and it dumps water,
Also cut your sodium down. Eat lots of watery veggies, and you will be surprised.
Ten days should be enough.
Try to keep your sodium intake at around1500 mg/day, this is the limit given to people with hypertension who are sensitive so sodium, so its doable but challenging. Stay away from packaged or processed foods since these types of food tend to have the most sodium/gram of food. Don't add any salt to the food you make at home.
Drink plenty of water, between 7-9 cups, or about 2 liters. Be careful not to overdo it with the water, since you can actually get hyponatremia if your sodium levels are too low, this will lead to headache, confusion, nausea, and can even be life threatening.
Add bananas! Water dense fruits like watermelon and cucumber. Some foods are natural duretics. Just dont mess with the real pill stuff, thats just gonna throw your body out of a horrible balance you dont want.
You could potentially lose a huge amt of water weight if you really wanted to, but it''s not healthy and you'll just end up gaining it back.
Dehydration is a dumb idea. You are going to the beach where it is hot and you will need to drink a lot of water and likely you will be also drinking alcohol which combined with dehydration is a bad idea. Have a glass of ice water and stop expecting changes in 10 days. Instead start eating healthier and exercising so that in 10 months you look great and have those abs you want
Lots of water, very little sodium.
I believe in this instance (counter to most) she is not actually concerned with the scale number but more about reducing stomach bloat.
I second all of the others as drinking 100 plus oz of water a day and eating low sodium is your best bet. I'd also go low carb for 4 days prior to your beach visit.