Can 35 mg of caffeine keep you awake at night?

Yes, 35 mg of caffeine can keep you awake at night, especially for individuals who are sensitive to caffeine or consume it close to bedtime. While this amount is relatively low compared to a typical cup of coffee, it can still interfere with sleep patterns by blocking adenosine, a neurotransmitter that promotes sleep. Individual tolerance levels vary, so some people may experience noticeable effects even at lower doses.