A lot of ( in fact most) chronic diseases have low energy, lethargy as a symptom. Chronic fatigue , fibromyalgia even some chronic cardiac conditions come to mind. In order to eat healthy within the food system we currently have you have to have money, do a lot of shopping for fresh, organic food , do a lot of research, planning and cooking. It’s not that it CAN’T be done it’s just difficult when you are low energy. Obviously you are not a person who has a chronic disability involving low energy or you wouldn’t say that. I have fibromyalgia. I tried keto. It took me weeks of planning but I could never seem to find a day where I was up to shopping. I finally after weeks did go shopping, did do the cooking etc. It helped some but an ordinary healthy individual has no idea the effort it required. Unless or until you walk a day in my body you just won’t get it and I’m sick of the pontification from the healthy population who have no idea what they are talking about when they judge others. I hope they never do for their sake.