Chilli powder is a wonderful spice that is packed full of health benefits. High in capsacin, this spice certainly packs a punch of nutritional benefits. Chilli powder also contains vitamin C, which can help strengthen your immune system. The capsaicin found in chilli powder can also release feel-good endorphins which have been known to increase mood and boost sexual arousal. But that's not just it, capsaicin can also help boost your metabolism too.