https://answers.yahoo.com/question/index?qid=1006060227970for example:
"HOW LONG does it take food to digest in your stomach?
Once you eat something...aprox. how long does it take to digest? do different foods take longer to digest? thanks! "
"if you drink caffeine l on a regular basis, probably like 1 hour or less. If you don't drink anything with caffeine probably 3-5 hours. If your like me and take Concerta for ADD it takes 30 minutes. If you excersise that can speed it up too. "