Shedding weight fast is a great method for excess skin that requires cosmetic surgery to remove. Slowly losing weight can reduce but not eliminate the requirements for surgery.
Good friend of mine lost almost half his body weight in around 4 years, his arms, legs are all OK but his stomach area needs some work. I can't imagine the hardship people "competing" on the biggest loser need to go through once the season is over.
Love my old Garmin vivoactive 2? Screen looks like shit but it's readable in any setting. It's pretty basic, use it for cycling as it talks to my chest-strap heart rate monitor.
I've got a pixel watch too, it's a typical 1st gen product. Half baked but gets the job done, battery is an all-day for me (no Sim model). It's got some scratches and blemishes all over the face, see how long it kicks around for.