Lose and NoT Gain this holiday with Fitb...

Lose 4% in 4 weeks!

Lose and NoT Gain this holiday with Fitbit!

Dec 01 - 28/Game has ended
Hosted by Amy B.
Join another game







Dec 01





Lose or maintain this December, NOT GAIN! Find support with our Team!



Game Begins

Dec 01

Last Day to Join

Dec 14

Final Weigh-In

Dec 29 - Dec 30



Our $25 Amazon gift card of course


Bet $10

to start

Lose 4%

in 4 weeks


Split the pot

How do you verify the weight loss?

For all official weigh-ins, you'll be prompted to submit your official starting weight. Our standard weigh-in process involves you submitting 2 photos: one of you standing on a scale in lightweight clothing (no shoes, hats, belts, watches, coats, or outerwear), and another of the scale’s readout with your weigh-in word written on a piece of paper.

What you'll need

  • A scale (preferably digital)
  • A digital camera or smartphone
  • A full-length mirror or someone to take your photo
  1. Privacy FAQ +
  2. How we prevent cheating +

Does this actually work?

Out of 911,304 DietBetters, 99.3% have lost weight during their challenges. Combined, they've lost 17,151,771 lbs and won $62,263,235. In other words...yes.

All results shown on DietBet are from actual users. Individual results may vary.

Don't take our word for it

Sara C.

12/31/2016 8:25AM - via android
Wow! More than doubled our money! Thanks again Amy :)

JayP , Samantha S. and Felicity2019 like this comment.

Amy B.

12/30/2016 7:39PM - via iPhone
  • Whoop whoop!! We have a winner! Everyone congratulate David B!
    Thank you to all who participated in our challenges...what a terrific group you've been! It took a lot of perseverance on your part to get through the 24 Days of December. It made our month so much more fun!
    Whether you won our bet or not, you are all winners to me for making it through December focused on your health. Great job, all!!
    David B, I'll message you for your info.
    Hugs, friends. Hope to see you around for another month sometime. :) Amy

JayP , Jackie S. and like this photo.


Congrats David!!

David B.

Thank you Amy for a great diet bet and a great set of challenges that helped to push me towards my goals and congrats to everyone that made their goals or started down the path to reaching your goals!!


12/30/2016 7:40AM - via iPhone
I gained a few pounds instead of losing and am now so much more motivated for my 2017 goals. Many congrats to all those who lost weight this month!!!

JayP , Samantha S. and like this comment.

Barbara C

12/30/2016 6:21AM - via iPhone
Do u have to do an official weigh-in if you didn't reach the goal?

Keri S and Sara C. like this comment.

View 1 more comment


If you enter a weight that isn't your goal the site closes and you can no longer enter anything

Barbara C

I didn't enter anything. I was close, but not close enough. Oh well, I still won because I lost... thanks Amy and everyone else for your support. See you in January!

Barbara C

12/30/2016 6:18AM - via iPhone
Well I didn't win, but I lost a lot. Missed the goal by 2 lbs, but lost more than I have in a year, so I still won!

Michelle F. , Amy B. and like this comment.

Luke R.

12/30/2016 4:15AM - via iPhone
I'm so close!!! Gotta water only diet today and go for a run this afternoon maybe I can pull it off. God luck everyone.

Janel H. , JayP and like this comment.


12/29/2016 8:48PM - via android
Moving and unpacking and being busy helped me at the end to reach goal. Yay!

Jackie S. , Amy B. and like this comment.


12/29/2016 7:09PM - via iPhone
Well I gained a couple pounds this round. That's ok. I knew with the holidays and not exercising so much I probably would. Time to refocus in January.

Amy B. , Michelle R. , Fern , April F. and Aline D. like this comment.

Gaenor A.

12/29/2016 5:05PM - via iPhone
I lost more than my target before Christmas and then gained a little back over the festivities but still came in under target!! Yippee

Jackie S. , Amy B. and like this comment.

Michelle R.

12/29/2016 2:21PM
I feel like a million bucks! I just hit my weight for the first time in way too many games! Thanks everyone for your motivation and energy! Amy, you are awesome!!!

Jackie S. , Amy B. and like this comment.

View 3 more comments

Michelle R.

Congratulations to you, too!

Amy B.

Yay yay yay!!

Ready to bet on yourself?