I am being told to go to PT by the command on only 4-5 hours of sleep. As a junior enlisted, how do I solve this problem?

Volunteer or ask if you can start a group afternoon pt session at 1200 or something like that.

listen, You signed a contract. as unbalanced as it may seem you are theirs. You need to Dig deep to survive. Try working on the flight deck for 12 hrs a day 7 days a week for 6 months. perhaps something very important to your service to the nation will be passed down. Don't miss it! I never did.

As a junior enlisted I’m going on my gut feeling here and guess your 23 - 29 yrs old +/- IDK these days.??! You should be quite fit and understand that this —- This Military Training thing we do is what prevails when you didn’t think you could but helping you to conquer your mind by complaining about it in the first place makes you selfish because the person to your left or right is hoping that you are just as trained and if not even better trained, depending on your rank or position, because when you are in the position one day should you ever earn the honor of moving into the non commissioned officers corps. Because it is then young troop, and only then that this wisdom i share with you will you understand the true meaning of belonging, band of brothers/sisters, a Corpse of leaders that train, develop, inspire, and execute orders; they are the backbone of every Armed Forces in the United States of America. The greatest country and nation that there Is and embraces freedom, justice, and the pursuit of happiness. That same privilege is being instilled into you young troop that it will too one day inspire you to push yourself to be more, give more, serve more, grow more, instead of worrying about the lack of sleep you get but instead to how many hours you do get to sleep, now go make the most out of those 4 hrs. Make them quality hours and don’t waste a minute worrying about all the troubles of the world because out there somewhere is another young troop that’s standing guard while rest hoping that he/she too could get just a few hrs of sleep but they can’t yet because the enemy is all around trying to find ways to disrupt or destroy our All (inclusive) American way of life! So pray you will someday be that backbone, but for now, please consider that your still in training. Sweet Dreams

I responded earlier, but to be honest, what would you do if you were in a field environment or real combat and got 2-3 hours of sleep a night and had to be up almost as soon as you went to sleep

What you do is stop trying to weasel your way out of it and get out there so you can PT. Stop being a wuss. Geez.

Honestly you just have to accept that the military doesn't care about you nor your needs / wants. You enlisted to server their needs. Like getting up at 4 AM and mustering and rushing to your post, to stand there and wait for hours before anything gets done. Its military life my dude, Do your time and move on.

Either get your PSG on your side so they can act as a buffer or catch a 3hr power nap, do pt, shower, and go back to bed if allowed. Most importantly; stop being a bitch

I sympathize. We hated the 12-hour shifts with zero breaks for a year other than R &R. Nurses typically work a 12-hour shift for 3 straight days in civilian life. Nap when you can. You are not a civilian & it should not be a big deal just a small pressure on you. See if you can handle it. OTOH, perhaps your 1sg isn't aware of the shift work times; suggest that YOU would like to lead a PT session at a different time. Your reasoning is to give more opportunities for the troops to participate should they miss PT for any reason.

Maybe when you need time to sleep and cannot function from lack of sleep you can tell the enemy to wait a few hours so that you may catch up on sleep time. Oh, wait your not going to get sleep sometimes to fix "lack of sleep." Sometime it just happens that way. Get over it and drive on with yourself.

Best to formulate a respectful, reasonable question/solution and go to your 1st supervisor.
My guess is this won't last too long.
Maybe hold out a few days.
As soon as the 1st accident, family incident etc. The CoC will step in with something sensible. Like PT for your shift is 1400 to 1500, shift starts at 1600.
All the leaders saying though it out, we partied and ran PT. Well, when you as a leader looking at another leader, like yea, now you have to face how and why that soldier died and killed his whole car of kids in the way to daycare to make PT on 4 hrs sleep. All because of the ego maniac, that created and held a do or die environment get reprimanded and force retired for being sheer stupid, you'll look at him like I did, with zero sympathy. Put your ego aside and use your brain. Goal fitness program and discipline. Not risk lives in garrison.