The brain has special systems that control how we feel pleasure and rewards. This is mainly done by some important chemicals called neurotransmitters. Here are the key ones:

1. Dopamine:

   • Often called the "feel-good" chemical, dopamine is very important in the brain's reward system.
   • Studies show that about 75% of the brain cells in a place called the ventral tegmental area (VTA) make dopamine.
   • Dopamine helps us feel pleasure and encourages us to do things that bring rewards. When we have fun or enjoy something, the release of dopamine can jump by 200% compared to when we are resting.

2. Serotonin:

   • This neurotransmitter affects how we feel, our emotions, and our overall happiness.
   • While around 90% of serotonin is found in our gut, it is also very important for the brain, especially in managing our mood.
   • Low levels of serotonin can lead to depression, which affects almost 264 million people around the world. This shows us how important serotonin is for feeling pleasure and rewards.

3. Endorphins:

   • Endorphins are natural chemicals that help relieve pain and improve mood.
   • They are released when we exercise, laugh, or even eat spicy food, making us feel happy and euphoric.
   • Research indicates that when we release endorphins, it can help us tolerate pain and feel good, which is very helpful for managing stress and anxiety.

In short, dopamine, serotonin, and endorphins work together in our brains to create feelings of reward and pleasure. This is very important for our motivation and for having positive experiences in our daily lives.