After years passed the coffee gained a great place in our daily life. There is some people that says they cant wake up without drinking coffee in the morning and this could be a lil bit dangerous for there health tho. So if a person wants to stay alerted and be a little bit more energetic they can drink coffee but if a person drinks coffee in the same dose daily after sometime it wont even affect them even if they drink that coffee they wouldnt be energetic and etc. Cuz coffee is like medicine if u use same pain killer over and over it wont affect after some time and if u drink coffee daily it wont effect u either and u will need to drink more coffee to stay awake and that could be a lot more cafeine for ur health. So while drinking something be a lil bit cautios about it or it might ruin ur life ...