Mk-677 Weight Fluctuation

I’ve been on MK-677 for about a week now. I made some really nice gains right off the bat and looked more cut in the process. I weighed myself last night and I was 183 lbs. I weighed myself this morning and was shocked to see 175 lbs. on the scale. How the hell did I lose 8 lbs over night? I figured it was water weight and lack of food in my stomach. I’ve been drinking water all day and eating a ton, still 175 lbs. I even look less cut than I did just last night. I’m taking 25mg a day in the morning. Any idea what happened, I was so stoked about my gains and it’s like I just went to sleep and they disappeared.