Does tea hydrate you

Tea is mostly made out of water, since that is only infused with tea leaves. So the answer is no. Tea, as a general rule, will tend to hydrate you. However, there are many chemicals in the tea, and the stronger you brew the tea, the less available water your body will be able to have from it.

Tea does contain caffeine, which can cause dehydration in very high doses, but the amount of caffeine in tea is too low to cause a dehydrating effect, even if you drink a lot of tea.