What is a one-sentence summary of the following article?
Whey protein is a popular choice because it is easy to digest and boosts energy. Take it within an hour of a weight training workout to help repair and grow your muscles.  Whey protein powder is widely available in health and fitness stores, either plain or in assorted flavors. Mix whey powder with water, milk, or other beverages for a quick post-workout protein boost. While many protein powders contain milk ingredients, there are vegan alternatives that offer many of the same benefits. Soy protein powder is easy to digest, smooth in texture, and can help to lower cholesterol. Pea protein powder is also vegan-friendly and highly digestible. Hemp protein powder is another vegan option if you are not aiming to lose weight, as it is high in calories and fat. Egg protein is low in fat and carbs, making it a perfect option if you are weight-conscious. Take this powder as part of a shake or snack before working out to boost your energy for exercise. You can also take it after a workout to recharge. Casein powder is highly effective because it lasts longer in the gastrointestinal tract, providing a slow and steady release of amino acids. This means that your muscles will have more time to repair and grow before your next workout. Consume this protein before you go to bed so it can work in your body throughout the night.

Summary:
Opt for a whey powder if you want to build muscle mass. Go for a plant-based protein powder if you want a vegan option. Choose egg protein powder if you want to build lean muscle. Buy casein powder to build muscle fast.