Coffee or tea? Yes.
4 to 5 coffee a day and iced tea in the summer and iced and hot in the winter. I can drink coffee at 11pm and be asleep at 11:30, at this point it just keeps me alive, without caffeine i go into withdraws and sleep all day.
I used to drink coffee with a ton of cream and sugar, think hot coffee ice cream, when i started keto, even thought heavy cream is good for you on keto, i started drinking it black, took about 2 months to be able to stomach black coffee, 3 yrs later amd still drink it black and enjoy it.