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?

Similar to what you're saying, I've done plenty of shift work. Sometimes it was individual PT, sometimes it was group PT. However, the group PT was always led by that shift and adjacent to their working hours.

Should a Soldier not make requests that improve their long-term working situation? At what point did trying to improve things become a negative?

"without a proposed workable solution you are whining"

You realize that the entire point of her posting here was to develop that "proposed workable solution," right?

yep and I gave some suggestions to give her some ideas. if they are going to grow they should be coming up with the workable proposals and how to present and implement them. A little "guided discovery" never hurts.

Pulling on wet lines to get ammo over while the waves are trying to wash you off the ship. Carrying heavy projectiles and stores, and we were too busy shooting and getting shot at to worry about time to do PT.. I gained some muscle mass so I must have been working a little.... Boot camp was a lot harder than from what I've heard too. Pretty cushy now for the cream puffs...

CPT Chris McGowan - It's not a place where youngsters get to criticize the physical stamina of old Marines either. You shot the first round across my bow, Chris. Don't expect a Marine not to return your fire. Best you crawl under that desk at Wells Fargo and resume counting your beans.

CPT Chris McGowan - I don't have to prove anything to you, Chris, but in terms of progressive positions, I voted for both Bill Clinton and Barack Obama, the only two presidents to lower the deficit in the last 50 years.
Incidentally, I'm not a Boomer. I was born in 1938 and am classified as a member of the Silent Generation: born between 1925 and 1945 and raised during a period of war and economic depression. We are the counterculture of a rebellious generation, distrustful of the establishment and keen to find our own voice. We were angry, but we channeled our anger toward hard work and loyalty to our country. We foolishly believed in "justice for all" and while we learned too late that very few politicians can be trusted, we were shocked to learn so many Americans could elect someone as corrupt, amoral, and disloyal to the country as Trump. Those who elected the likes of Trump, MT Greene, L Boebert, P Gosnar, J Jordan, M. Cawthorne, and so many other Trump-worshipping Republicans are the ones you should be channeling your anger at.

Jerry check your national debt figures for Obama, depending on the measuring stick and there are 3 possibilities he raised the national debt between 2.3 and 9 trillion. Your response is more political opinion than factual.

SP5 Tom Flaherty - I'm looking at facts, Tom. You're talking about various
measuring sticks and "possibilities" which make your response "political opinion" by definition.

The article is very informative, for the officers and NCO’s who need to contemplate such things. As enlisted personnel, such as the OP is, our duty is to DO the tasks asked of us, to the best of our abilities and hope that our leaders know what is best for us.

CPT, in response to your comment. I will first address the specifics of the actual question, and then I will respond to your general commentary regarding senior leaders, last.
Your response versus mine reflects the fundamental difference in the thinking process of Junior officers vs Senior. Your response was from a tactical view and mine the strategic. Your response was exactly what his immediate NCO or Company Level officer might provide. Absent any knowledge of the command climate and the training duty environment the information provided was at best limited. Looking at the poster's duty position one can draw some conclusions and that his senior leaders were likely medical duty positions, including the SGM as well. That being said they would be in a better position to know the reasoning for the PT schedule. As I pointed out the individual cannot lawfully be compelled to be in two duty positions at one time so from that viewpoint he has a decision to make and would not be subject to any UCMJ action and as indicated the Onus is on leadership to deconflict. There is no army regulation on a "standard duty day". Planning for sleep in training and tactical environments is a core leader competency. Leaders must know the sleep-work cycles of their Soldiers, particularly when they are working shifts, are in operational environments or are outside standard duty hours. However, Sleep does not have to be taken in one continuous period to be effective. It is preferable to give Soldiers uninterrupted sleep time at night when the brain clock is programmed for sleep. But two periods that add up to 7 or more hours of sleep every 24 hours also work. Naps can be taken to compensate. See TRADOC Regulation 350-6 for training. The bottom line is the individual has the DIRECT responsibility to use the chain of command, sorry if you see that as having to "suck it up".
The next comment is in regard to your overall indictment of "older officers". I find it is often best to not make such board characterization unless I know more. For example, I was an enlisted soldier first, as an E5, I too was disgruntled and separated for a number of years. I finished my education and obtained my commission but as a result, I was on average 10 years OLDER than my peer group so I had to work twice as hard, physically, to be in the top 5% but the difference in age also served me well as I was a little more seasoned and mature. Your comments reflect a number of flaws in thinking but only age will address that. With respect to Afghanistan and Iraq, these are discussions that are had as the war college adnausem. I will close by saying yes there were some serious failures but I will offer that, while not the exhaustive reason, some of the reasons are the direct result of forgetting what the core mission of the army is. The Army is NOT the "battlespace" for social or societal agendas. The Army is not for everyone, not should be seen as such, hence sometimes the phrase "embrace the suck" is relevant, particularly you are not in a Rapid Deployment Joint Task Force (RDJTF).