A couple have revealed how they have collectively lost 266lbs (19st) - by working out almost daily together.
Bartender and university student, Samantha Gilmore, 22, from Missouri, says she was 'always overweight' growing up and was even warned by a paediatrician that she would be obese by her 16th birthday.
At 17, Samantha moved in with her boyfriend, photographer and machine operator, Rick Stahl Jr, now 26. Rick had also struggled with his weight growing up, despite playing football in high school.
When he moved out of his mother's house, he began overindulging in food and reached his heaviest weight of 420lbs (30st), wearing a 5XL shirt.
It wasn't until the couple came across a picture of themselves that they realised how large they had become.
In 2017, Rick decided to make a change. He discovered the keto diet, a high-fat, adequate-protein, low-carbohydrate diet.
He has since been working out six days a week at the gym doing cardio, ab workouts and weight training and has slimmed down to a healthy 215lbs (15st 5Ibs) and now wears a shirt size medium.
Seeing the impressive change her boyfriend had made - and after he proposed to her in October 2018 - Samantha decided to follow in his footsteps and they now work-out together.
Within six months, Samantha has shrunk to 140lbs (10st) and a size six (UK size eight).
The two of them now feel more energised, even in the bedroom, as their sex life has been re-born due to their dramatic weight loss.
'My family life wasn't the best. With drug addicted parents that had me very young and never stayed together, I really had to raise myself,' Samantha said.
'My fiancÃ© is a different story. He grew up with separated parents, but they are amazing. They have always been supportive and kind, and just phenomenal parents to him.
'He has great relationships with his mother, father that raised him, his step father, and his biological father today.
'We have both always been overweight. Rick was in football in high school, so he did gain a lot of fitness knowledge and was fit for a short period of time, but neither of us have never weighed this low before.
'I remember my paediatrician telling me as a child I would be over 196lb (14st) by the age of sixteen, but I wasn't until I was twenty-two.
'For me it was really a lack of direction; I didn't really have anyone to keep me accountable before. I ate whatever I wanted and wasn't active much at all.
HOW THEY'VE DONE IT: RICK AND KATE'S GYM ROUTINE
The couple eat a keto diet, keeping their net carbs under twenty to thirty grams a day.
Working out six days a week, the couple do 45 minutes of cardio, 15 minutes of ab workouts, and 30 to 45 minutes of weight training
'I always told myself I needed to lose weight, but never would, and I would be even harder on myself. I've always felt like it's the first thing people think about me, it's still hard to get out of that mindset.
'Rick felt like the healthy lifestyle just wasn't for everyone. He tried to get comfortable being the "fat guy".
'We both saw photos of important moments of our lives and were just disgusted with who we let ourselves become, so we decided to make a change.. It took me a little longer, but I did it.'
They now follow the keto diet and work out six days a week and while they both have excess skin, they are both very proud of what they've achieved.
They can now wear what they like, and Samantha says that she wears less makeup now as she finally feels more confident in herself.
'We have been eating keto; keeping our net carbs under twenty to thirty grams-a-day and we workout six days-a-week,' she said.
"We do twenty to forty-five minutes of cardio, fifteen minutes of ab workouts, and thirty to forty-five minutes of weight training.
'We love being able to wear whatever we want now. We no longer have the trouble of not being able to find clothes, in fact we can't decide between all the options that we now have. It's liberating to have more energy and just to feel good about yourself more often.
'We both have more sex drive since losing the weight, as well as more stamina. I even wear less make up now.
'It's definitely hard to keep the positive mindset all the time. A lot of the times I still feel like the first thing people think when they see me is that I'm fat. But yet I wear a size small now, it's just hard to wrap my head around all the time.
'We both have some loose skin so it's not always easy to feel accomplished when you look in the mirror. But we're so proud of our progress and we know we've come a long way.
'We have cut down our carb and sugar intake massively. We've also made working out a daily part of our lives.
'Start fresh; if that means getting rid of what's in your pantry, or getting some new workout shoes, it helps to start motivation.
'Remember that you can do anything you want to do, and if you want it bad enough, what's hard now becomes easier as you get stronger.
'Find someone to keep you accountable as well, someone you can't or won't hide any slip ups from. It helps to have someone in your corner.'