Actually we were made to nap. We were not made to be up and work 10-12 hour days and then sleep for 8 hours. In fact, historically speaking, all the great geniuses of the world would stay awake, nap, awake, nap, etc....they did not keep "regular" cycles. Not to mention, we are one of the few cultures that do not "approve" of naps, and we label them as something tabboo and weak. In fact just the opposite is true. The human body has a need for down time and to recharge.
As for your rashes, I'd suggest you get a culture done, not blood work. This is not normal. I'm not sure exactly what you're attributing to "allergies," -- allergies to WHAT exactly?
If you're having dermatitis, an allergy to fabric softener or soap or spermicide, (because your "rash" sounds localized it sounds like you'd need to address what your penis comes in contact with, from your hygeine care to condom use, as well as making sure your sexual partners are not infected with something -- it's possible you've contracted an STD and the lethargy is symptomatic of something systemic).
If you're otherwise healthy, I would indulge in the nap time. Dietary changes and nutrient balance can be of concern and worth looking into as well, so can exercise, (under or over training), stress, emotional repression... and even conditions which are psychogenic in nature, they are serious and worth investigation. They are not to be written off.