2. Drink probiotic supplements or drink which can help boosts your energy and improve your immune system. This also makes you younger-looking. This is also an excellent source of natural sodium and potassium. Tongkat Ali is another great herb proven to increase levels of testosterone. You won't have to suffer from low libido which affects your sex life. These are the natural ways on how to increase libido the natural way. Without any chemicals to affect your system, try these natural and simple tips on how to improve your sex drive. The Red Death symbolizes the inevitability of death. Although there is no specific disease using the exact symptoms described in the story, critics believe the disease's description has aspects of tuberculosis, an illness which killed a lot of all-around Poe. It also brings forth memories in the Black Death which depopulated high of Europe in the Middle Ages.