This question is about Nutrition
When combined with a healthy diet, protein shakes are a convenient and cost-efficient way to boost protein intake and meet your nutrient needs. If your goal is muscle repair and recovery, you should drink protein shakes within two hours of exercise [ 1
If you struggle to get enough protein at mealtime (or are trying to lose weight), a protein shake can help bridge the gap. Experts recommend aiming for 25-30 g of protein/meal, and while many Americans meet this requirement for lunch and dinner, evidence suggests that protein consumption at breakfast is generally well below the recommended amount [ 2
2]. As such, you could drink protein shakes in the morning to fill in the gaps.
Kerksick, C., Harvey, T., Stout, J., Campbell, B., Wilborn, C., Kreider, R., Kalman, D., Ziegenfuss, T., Lopez, H., Landis, J., Ivy, J. L., & Antonio, J. (2008). International Society of Sports Nutrition position stand: Nutrient timing. Journal of the International Society of Sports Nutrition, 5(1). https://doi.org/10.1186/1550-2783-5-17
Heather J Leidy, Peter M Clifton, Arne Astrup, Thomas P Wycherley, Margriet S Westerterp-Plantenga, Natalie D Luscombe-Marsh, Stephen C Woods, Richard D Mattes, The role of protein in weight loss and maintenance, The American Journal of Clinical Nutrition, Volume 101, Issue 6, June 2015, Pages 1320S–1329S, https://doi.org/10.3945/ajcn.114.084038