YouTuber MrBeast is subscribing, liking and commenting on his latest fitness journey.

The social media star, whose real name is Jimmy Donaldson, recently shared insight into his workout routines, posting before-and-after shirtless images of his gym transformation.

"Woke up and realized I was obese so I started lifting and walking 12,500 steps a day," MrBeast tweeted on June 29. "Still got a long way to being yoked but I'm happy with my progress so far."

The 25-year-old received support from fans in the comments, including one user who wrote, "This is inspiring AF makes me want to get into better shape thank you for this push man and congrats." In response, MrBeast sent back a heart emoji.

When another user praised his progress but remarked that his pecs "need work," MrBeast replied, "Everything needs work, step one was not be fat haha. Now we get big."

In addition to grinding on his fitness journey, MrBeast—who boasts more than 163 million YouTube subscribers—pours his time into creating content for his social media pages.

"Weirdly enough, the best thing for my mental health was giving into my innate nature to work," he said in an interview with YouTuber Lex Fridman in January. "And the most depressed I get is when I try to restrict it, like, 'I don't work weekends' or 'I don't work this day.' What's best for me is just to work when I feel like working."

In fact, he's willing to put in long hours if the situation feels right.

"There are just some nights where I don't wanna sleep, and for whatever reason, I feel compelled to go all night," he added. "And when I'm really in the grind mode it'll be seven or eight days just non-stop going, going, and then I'll realize, 'Oh, I need some recharge time,' and then go f--king binge a season of anime."

And MrBeast isn't the only celeb focusing on fitness. Keep scrolling for more workout inspiration from your favorite stars.

"I always move, even for a few minutes each day. Sometimes I'll go into a room, turn up the music and just dance. It's a great way to let loose and feel great."

"Honestly, my favorite way to break a sweat right now is playing VR. We got a virtual reality headset right as everything was shutting down and it's been AMAZING during quarantine. There are so many games that make you work up a sweat and it's so awesome. I am genuinely so sore after I play."

"Under normal circumstances it's going to the gym, but right now I'm taking online classes with my Pilates instructor Britni Lariviere (@CarrotsandPlanks). I'm also trying to jump rope—2,000 strokes each day."

"Family bike rides are big for us right now and I always try to carve out thirty minutes for pilates with Andrea Rodgers and foam rolling with Lauren Roxburgh."

"Running and listening to music. The best outlet I've found these last few months being stuck in the house! I feel so great and pumped up after."

"My favorite way to break a sweat is mix of sex, PRx Performance, hiking, biking."

"By connecting with my audience and motivating them through my Brooke Burke Body fitness app! I've been live streaming on the app as well as on my Instagram since the beginning of quarantine in an effort to make fitness fun and innovative. I especially love walking my viewers through total body cardio parties, which is when I crank up the music, let them find their rhythm and let the booty burn. Cardio kicks up your heart rate, so if you're not sweating, you're not working out hard enough!"

"I have been doing a lot of Sculpt, Cardio Boxing and Yoga Classes on the obé Fitness App and virtual classes with Pilates By Amanda. If I don't have a lot of time, I will do Lauren Gores' express workouts on her Instagram."

"During lockdown it's yoga under my own direction. I can go onto so many different tangents and by the time I am done it is often two hours."

"My trainer, Amoila Cesar, gets lots of results out of me by appealing to my 'no quit,' competitive side. He yells and I love it. During quarantine, I got my fix by doing his 6 Weeks of THE WORK on Beachbody on Demand. I also love a rigorous barre class and need daily yoga."

"Doing something active with the kids. It's always different but recently it's been dancing or playing some kind of sport."

"I've been doing a lot of dancing in my apartment. I'll turn on some music and just go. Sometimes it's more structured, sometimes it's interpretive, sometimes I twerk. Also hiking!"

"My go-to work out is P.Volve, I've gone to their classes for years and now I stream them at home. I try and workout at least 3 to 4 times a week even if its for only 30 minutes. Its all about strengthening and elongating your muscles. It's my favorite!"