How many calories are in 1 gram of protein?

Protein provides 4 calories per gram, making it an essential macronutrient in the diet. This caloric value is crucial for personal trainers and fitness professionals to understand when developing nutrition plans for clients, as protein plays a key role in muscle repair, enzyme production, and overall bodily functions.

By knowing that protein contains 4 calories per gram, trainers can help clients calculate their daily protein needs based on their activity levels and health goals, such as weight loss or muscle gain. This information is foundational in sports nutrition and can influence dietary recommendations significantly.