Keep in mind that caffeine can affect you for 5-6 hours after consuming it, so give yourself an appropriate cut-off time according to when you plan to turn in for the night.
Buru n'uche na caffeine nwere ike imetụta gị ruo ihe dị ka awa ise na isii ruo mgbe i risịrị ya, ya mere nyere onwe gị oge kwesịrị ekwesị dị ka oge ị na-ezube ịbanye maka abalị ahụ.