Tāmasic – individuals consume recreational drugs and drink alcoholic beverages.
Rājasic – drinks excitable, caffeinated beverages.
Sātvic – prefers water, fruit juice, etc.
Bhagawad Gitā, XVII.7-10
6. Sleep:
Tāmasic – person sleeps during the day or while at work.
Rājasic – has difficulty sleeping and has excitable dreams.
Sātvic – enjoys restful, sound sleep at home & at appropriate time. Gets up before sun rise to meditate.