Praise yourself for trying
The slowest drug absorption/response is definitely oral/digestion route.
The fastest drug response time route would be intravenous, the drugs directly enter the blood so it can work instantly. Snorting/inhaling drug still need time to be absorbed to the blood vessel. It might be fast enough if used for local response (example: asthma). The mechanism probably by mucosa diffusion so its similar to rectal or sublingual route.
Answer:
We should drink water while we exercise because when we exercise, we sweat out part of the water we have in our bodies. Water is important to our everyday life, and when we become tired and overheated, water helps us to cool down, and it also helps replace the water we lose from sweat.
B: situations, people, and events
