What Is Stress? Its Effects and Symptoms

Authors Avatar

What Is Stress?

Stress is your body's way of responding to any kind of demand. It can be caused by both good and bad experiences. When people feel stressed by something going on around them, their bodies react by releasing chemicals into the blood. These chemicals give people more energy and strength, which can be a good thing if their stress is caused by physical danger. But this can also be a bad thing, if their stress is in response to something emotional and there is no outlet for this extra energy and strength.

Symptoms of Stress

Stress affects us all. If you can spot the symptoms, you can manage them. A stressed person is unlikely to experience all of these symptoms and that even one can be a sign of stress.

Emotional/cognitive symptoms

Emotional and cognitive symptoms of stress include:

  • Feeling irritable
  • Feeling frustrated at having to wait for something
  • Feeling restless
  • Unable to concentrate
  • Becoming easily confused
  • Having memory problems
  • Thinking about negative things all the time
  • Negative self-talk
  • Having marked mood swings
  • Eating too much
  • Eating when you are not hungry
  • Finding it difficult to concentrate
  • Not having enough energy to get things done
  • Feeling you can't cope
  • Finding it hard to make decisions
  • Having emotional outbursts
  • Generally feeling upset
  • Lack of sense of humor

Physical symptoms

Physical symptoms of stress include:

  • Muscle tension
  • Low back pain
  • Pains in shoulders or neck
  • Pains in chest
  • Stomach/abdominal pain
  • Muscle spasms or nervous tics
  • Unexplained rashes or skin irritations
  • 'Pounding' or 'racing' heart
  • Sweaty palms
  • Sweating when not physically active
  • 'Butterflies' in stomach
  • Indigestion and 'the gurgles'
  • Diarrhea
  • Unable to sleep or excessive sleep
  • Shortness of breath

How Does Stress Affect The Body?

To understand what stress does to us, imagine you lived tens of thousands of years ago, at a time when humans were threatened by hungry animals such as saber-toothed tigers and wolves. Our caveman ancestors had to be able to react instantly, either by fighting the beasts or running away.

Join now!

So humans evolved the ability to respond to a stressful situation instantly, by preparing the body for "fight or flight." Under sudden stress, you will get a burst of exceptional strength and endurance, as your body pumps out stress hormones:

  • Your heart speeds up
  • Blood flow to your brain and muscles increases up to 400 percent
  • Your digestion stops (so it doesn't use up energy that's needed elsewhere)
  • Your muscle tension increases
  • You breathe faster, to bring more oxygen to your muscles

Sometimes we can still benefit from this "fight or flight" response ...

This is a preview of the whole essay