You know a sleepless night can spell trouble the next day. But that doesn’t just mean dozing off at your desk or your workout feeling like a slog. Here’s a look at eight serious issues you can run into.

Insomnia wreaks havoc on your life, leaving you tired and frustrated. Insomnia affects your cognitive functioning and your mood, affecting your ability to complete tasks and interfering with your ability to interact effectively with others. When you struggle to get a good night’s sleep, it can affect your brain.

Most any food or compound you consume can elicit undesirable reactions. Fish oil provides a well-documented plethora of healthful benefits and is reputed to have few side effects.

Insomnia is when you’re unable to sleep or to sleep satisfactorily. About 50 percent of U.S. adults consistently suffer from some kind of sleep-related problems where insomnia is the most common.

If you increase your training volume without sufficient recovery, you will eventually become overtrained.

Ever since Prozac (generic name fluoxetine) hit the pharmaceutical market in 1987, selective serotonin reuptake inhibitors, or SSRIs, have become a popular type of antidepressant medication. Unfortunately, side effects from SSRIs include a host of difficulties from nausea to insomnia.