Workout Perk

If you like a cup of coffee in the morning, moving your exercise routine to the morning, too, could mean a workout boost. In a study, people who consumed about a coffee cup's worth of caffeine before their workouts experienced less exercise-induced muscle pain during their fitness routines. Researchers speculate that the muscle-soothing effects could boost exercise endurance.

Although moderate caffeine consumption (less than 250 milligrams per day) is safe for most people, some people may experience undesirable side effects. People who are sensitive to caffeine or who get excessive amounts of caffeine in their diet may experience increased heart rate, restlessness, nausea, or difficulty sleeping due to caffeine. If you have difficulty sleeping at night, avoid caffeine later in the day. Also, people who are pregnant, have a heart condition, or have ulcers may be advised to avoid caffeine.