Xbox Fitness

***UPDATE 10/1/2014***
Dale Norris 25 informed me that the glitch is still working, so I tried what he said it and can confirm that it is still working on the Tracy Anderson Transform I Muscular Structure I workout. Math Guy 42 mentioned in the comments that Beachbody: Rockin' Body works as well.

Before trying to use this glitch you need to make sure that the first challenge which requires you to complete the workout two times is not already completed. If you have already completed this challenge, you need to find another workout with a similar challenge (other workouts have not been verified).

Once you have verified that you still have the challenge which requires two completed workouts, you need to make sure that you have completed one of the two workouts. For example, you have not played this workout before so you earn points in the workout by completing an exercise and then skipping to the end (I skipped to the cool down and completed the cool down as well). This registers a completed workout.

When you confirm that your challenge progress is 1/2 completed workouts follow these instructions:
1) Launch the workout
2) Skip the intro. This will begin the workout.
3) You cannot bring up the start menu for the first 10 seconds of the video. Once the 11 second mark hits you can press start. Quit the workout. This will earn you 2 stamps.
4) Launch the workout again and repeat the steps.


***UPDATE 2*** This glitch appears to be fixed. Please do not vote any more. I believe the best way to 50 stamp cards is by playing through as many workouts and challenges as you can. It may be boring doing workouts below your athletic level, or difficult above your level, but repeatedly playing the same workout in an attempt to get this will take a very long time.

***UPDATE*** UndeadRawckz found a very fast shortcut and I am putting it at the top, so if you are unfamiliar with this glitch, read over the guide and come back to this update.

New and Quicker Method: UndeadRawckz: "I just found a much quicker way of doing this; if you skip the second skip (So that the workout starts) then simply pause and quit (Press the leftmost button) before you score any points it will give you two Badges on your card. I just tested this several times and it worked, making the process extremely quick regardless of which workout it is done for. To reiterate, start any of the listed exercises, Press A to skip the warning message, then press A to skip the intro; pause the game and exit then load the exercise again and repeat."

This only works if you have not already completed the session challenges that require you to complete the workout. I expect this glitch will be fixed in a future update, so I hope you're able to take advantage of this before it's patched. Please comment on if this worked for you or not, and if you have any questions, comments, concerns, or improvements.

Original (slower) Instructions
1. Open Xbox Fitness.
2. Launch the Beachbody Brazil Butt Lift High and Tight workout (if you have already completed the session challenge that requires you to complete the workout twice, you will need to find another workout that has a similar challenge such as Mossa: Power Workout 1).
3. When the workout begins, pause the game and skip to the end. Do not wait too long to skip to the end, and make sure you do not register any points. If you wait too long or score points this may make the challenge complete for good (as MathGuy42 mentioned in the comments, you will need to register points for your first workout so that your progress is at 1/2 when you begin the workout again, otherwise you will go from 0/2 to 1/2 then back to 0/2).
4. You should be awarded two stamps for this workout.
5. Start up the workout again and repeat.

You will need to complete your 50th Stamp Card for the achievement to unlock.

Workouts this can be done in:
Confirmed
Beachbody Brazil Butt Lift High and Tight - 2 stamps and takes about a minute (from launching the workout to launching the workout again).
Mossa Power Workout 1 - 2 stamps
Insanity Pure Cardio - 3 stamps but the remaining time you need to wait after skipping to the end is around 30 seconds
Tracy Anderson Transform I Muscle Structure I - 2 stamps and takes about 45 seconds.
Beachbody Rockin' Body Rock It Out - 3 stamps
10 Minute Solution 5 Day Get Fit Mix Belly Fat Burner - 2 stamps

Unconfirmed
P90X Shoulders and Arms - 3 stamps
10 Minute Solution 5 Day Get Fit Mix Cardio Kickboxing - 1 stamp
10 Minute Solution 5 Day Get Fit Mix Fat Blasting Intervals - 1 stamp
10 Minute Solution 5 Day Get Fit Mix Lean Body Sculpt - 2 stamps
Rapid Results Fat Burner Extreme Intervals - 1 stamp
Rapid Results Fat Burner Low Impact Fat Blaster - 1 stamp
Rapid Results Fat Burner Power Sports Drills - 1 stamp
Ultimate Boot Camp Fat Fighting Skills and Drills - 2 stamps
Ultimate Boot Camp Ultimate Lower Body Training - 2 stamps
Beachbody 10-Minute Trainer Total Body - 1 stamp
Insanity Plyometric Cardio Circuit - 3 stamps
Insanity Cardio Power and Resistance - 2 stamps
Jillian Michaels Kickbox FastFix Workout 2 - 1 stamp
Jillian Michaels Kickbox FastFix Workout 3 - 1 stamp
Jillian Michaels Hard Body Workout 2 - 3 stamps
Jillian Michaels Extreme Shed & Shred Workout 1 - 3 stamps
Jillian Michaels Killer Buns & Thighs Level 1 - 3 stamps
Jillian Michaels Ripped in 30 Week 2 - 2 stamps
Jillian Michaels Ripped in 30 Week 3 - 3 stamps
Jillian Michaels Ripped in 30 Week 4 - 2 stamps
Mossa Core Core Workout 1 - 3 stamps
Mossa Core Core Workout 2 - 3 stamps
Mossa Fight Workout 1 - 2 stamps
Mossa Power Workout 2 - 2 stamps
Tracy Anderson Metamorphosis Omnicentric Transform 1 Day 11-20 - 2 stamps
Tracy Anderson Metamorphosis Omnicentric Transform 1 Day 21-30 - 3 stamps
Tracy Anderson Transform I Muscular Structure II - 3 stamps
Tracy Anderson Transform II Muscular Structure I - 2 stamps
Tracy Anderson Transform II Muscular Structure II - 3 stamps
Tracy Anderson Transform II Muscular Structure III - 2 stamps

I used Twobby's guide to help complete this guide. Let me know if any of this information is incorrect.

How I Came Across this Glitch
The challenge began and I wanted to complete it quickly. I decided to use this Beachbody Brazil Butt Lift High and Tight workout because it was a workout I most likely would not do in the future, so I did not care if I got 0 FP for this workout. I skipped to the end of the workout and that is when I came across this glitch.

After I looked at the leaderboards on this site, I believe there was one other gamer who discovered this or something similar before me.

Thanks to everyone who has commented with their experience and helped improve this guide.

This achievement is going to take a long time commitment. To get it you have to earn stamps to fill out the game's loyalty cards. This achievement will pop when you've filled out your 50th loyalty card. A little perspective by the 5th loyalty card it takes over ten stamps per card, so expect a long haul to get to the 50th.

You get stamps in three ways:

Session Challenges
Session Challenges are represented by the purple bars in the workout summary. These challenges are a predetermined list unique to each workout. There are three tracks of session challenges with four total challenges in each track. Some challenges are designed to take multiple workouts to complete, and some can be much harder than others. These challenges can also be worth more than one stamp at a time. When in the game look at the right of the purple bar, there will be a little circle with a number in it. That will indicate how many stamps you get for completing that specific session challenge. The challenges worth more stamps are usually further down the track, so you won't get them until your second or third time through that workout.

For these challenges I recommend picking a workout and completing it multiple times in a week. You will get better at completing the specific exercises and find these challenges easier to complete.

Community Challenges
Community challenges are represented by a yellow bar that will pop-up on the bottom right of your screen when you work out. These challenges are against either your previous score on this exercise, a person on your friends list who completed this exercise, or the average of the scores in the gender\age group you fall into.

If you beat the target you get a counter added to your community challenge counter at the end of the workout. These count across all workouts, and once you've completed ten community challenges you will get one stamp. You'll find you get between 1-10 challenges per workout depending on how long of a workout you have elected to do.

Xbox One Challenges
Xbox One Challenges refer to the new challenge system introduced with the release of the One. They can be found in the achievements app on the first page, click the ellipses to expand the view if you don't see Xbox Fitness challenges on the first page. They can also be found listed here Xbox Fitness Challenges.

These challenges when completed gift the player with loyalty card stamps. You get a surprisingly large number per challenge so I highly recommend giving these a shot. A note here, you won't see the rewarded stamps until after you complete your next workout. So don't panic if you don't see the stamps right away, you should see them at the completion of your next session.

Good Luck, and Dig Deeper! :)