Why are sweets actually good after a workout?

Sweets, or carbohydrates, can be beneficial after a workout because they help replenish the glycogen stores in your muscles that were depleted during exercise. Glycogen is a form of glucose that your body stores in your muscles and liver and uses for energy during exercise. When you work out, your muscles use up some of this stored glycogen, which needs to be replenished for proper recovery.
Consuming carbohydrates after exercise can also help stimulate the release of insulin, which helps transport nutrients like glucose and amino acids into your muscle cells for repair and growth.
However, it's important to note that not all sweets are created equal, and it's best to choose sources of carbohydrates that are also rich in nutrients and low in added sugars. Some examples include fruits, whole grains, and sweet potatoes. Consuming too many high-sugar, low-nutrient sweets after a workout can actually be detrimental to your health and fitness goals.