1. Depends on weight. The calories of different pizzas will vary depending on the sauce, cheese, and toppings used. On average, the calories per 100 grams of pizza are about 235 calories, with a protein content of 16.5 grams and a fat content of 6.8 grams.

2. Therefore, the specific calories of four pieces of pizza need to be calculated based on the weight of the pizza, but generally speaking, the calories of one pizza are about 200 calories, so the calories of four pieces of pizza are almost 800 calories. Around 100 calories, the calories are still relatively high.

3. Under normal circumstances, the human body has less activity at night, so gastrointestinal motility will be slower than during the day. Eating pizza at night is not easy to digest, and some gastrointestinal functions are relatively weak. People who consume too much may also experience indigestion symptoms such as bloating and food accumulation. It is recommended to consume in moderation.

4. However, there are also some people with better digestive function. These people have a faster body metabolism and digest and absorb food faster, so they generally do not suffer from indigestion, but they do. It is recommended to consume it in moderation.