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Anonymous
Whey powder is definitely worth it, but you should understand how the different proteins work.
Whey gives you the biggest bang among the proteins but it's really only the best for an immediate post workout meal since it digests so quickly and spikes in your bloodstream very soon after digestion.
If you're going to digest protein at a random time of day, a better bet is probably casein (probably from cottage cheese or milk) since that has a much slower absorption rate and digests over a period of several hours, which is why it is the prefered "pre-sleep" snack or a snack at a random time of day when you want it to tide you over for a few hours.
Eggs are second only to whey in terms of how much bang you get but they make for a better meal at breakfast, lunch, and dinner simply because they take longer to digest than whey and will be in your body for longer.
Basically, what I'm saying is that whey isn't that attractive of a "general meal replacement" simply because that's not really its job. Slower digesting proteins that peak in your bloodstream at later hours are generally what you want out of a normal meal or a snack, so eggs, casein, chicken, and soy are the better alternatives at other times of day. For post workouts though, there's nothing that comes remotely close to whey for getting the protein to your muscles asap after a workout.
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