Q: What are the effects of tea on sleep patterns?

A: Tea contains natural substances such as theine (caffeine), which can act as a stimulant and may affect sleep patterns if consumed late in the day. Black, green, and oolong teas contain more theine and are best enjoyed in the morning or afternoon. Herbal teas such as chamomile or valerian are caffeine-free and are known for their relaxing properties, making them a good choice for the evening.

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