Your liver is the key to good digestion and adequate nutrition because the enzymes produced in the liver aid in the metabolism of proteins. The liver produces more enzymes from water with lemon than from any other food.
If you get a sunburn, apply witch hazel to the burned area. Witch hazel is a solution made with an extract from the leaves, twig and bark of the Hamamelis plant, that has strong antioxidant and anti-inflammatory effects that are soothing and cooling to sunburned skin.
Warm water with lemon contains citric acid which interacts with other enzymes and acids which easily stimulate the secretion of gastric juice thereby aiding digestion.