Whey Protein Explained: How Much You Need, When to Take It and What Actually Matters
Whey protein explained in full: how much you actually need, when to take it, water vs milk, and the myths about timing and kidneys that won't die.
Protein is the one supplement nobody argues about. The research is settled, the mechanism is simple, and it does more for muscle growth and recovery than almost anything else on a shelf. The confusion isn't whether it works. It's how much you need, when to take it, and whether any of the timing rules people repeat in the gym actually matter.
Here's the full breakdown: what whey protein is, how much you actually need, when to take it, and the myths that won't die.
Whey is a byproduct of cheese production, separated from milk during processing. It's a complete protein, meaning it contains all nine essential amino acids your body can't produce on its own, and it's absorbed quickly relative to other protein sources.
You'll usually see two forms: whey concentrate (roughly 70 to 80% protein by weight, with some fat and lactose remaining) and whey isolate (filtered further, typically 90%+ protein, less fat and lactose). Beast WHEY blends both, using a graded whey source (Lactomin), delivering 21g of protein per 30g scoop.
How Much Protein Do You Actually Need?
The ISSN's position stand on protein and exercise puts the effective range for people training for muscle and strength at roughly 1.4 to 2.0g per kilogram of bodyweight per day, spread across meals.1 For a 90kg lifter, that's 126 to 180g a day, food included, not just shakes.
A protein shake is a convenient way to hit that number, not a requirement. If your meals already get you there, a shake is optional. If they don't, one or two scoops closes the gap without the meal prep.
When Should You Take It?
Post-workout is the most common time, and for good reason: muscle protein synthesis is elevated after training, so it's a sensible moment to get a fast-absorbing protein in. But the old "30-minute anabolic window" isn't the hard cutoff it's made out to be. A 2018 meta-analysis found total daily protein intake matters far more than the exact timing of any single dose.2
In practice: take it post-workout if that's convenient, but don't panic if it's an hour or two later. A shake also works well as a high-protein breakfast, a between-meal top-up, or before bed when a slower-digesting option isn't practical.
Water or Milk?
Both work, and it comes down to what you're optimising for. Water gives a cleaner, lower-calorie shake, useful post-workout or when you're tracking macros closely. Milk adds extra protein, carbohydrate and calories, better suited to a mass-building phase or a more complete recovery shake.
Common Myths
"Too much protein damages your kidneys." This applies to people with pre-existing kidney disease, not healthy individuals. There's no good evidence that high protein intake harms healthy kidneys.
"You have to hit your protein within 30 minutes or you lose the benefit." Total daily intake and consistency matter far more than a narrow post-workout window.2
"Plant protein is just as good as whey." Plant sources can absolutely contribute to your daily total, but whey's fast absorption and complete amino acid profile make it the more efficient single source, which is why it remains the default choice for post-training recovery.
Whey Protein FAQs
Eddie's take: "Protein's not complicated. Hit your number, every day, and don't lose sleep over exactly when the shake goes in. I care more about total intake across the week than what time it happens on any single day."
Premium Whey. Serious Protein.
Beast WHEY is a blend of whey protein concentrate and whey protein isolate, using Lactomin, a quality-graded whey source. Each 30g scoop delivers 21g of protein to support muscle growth and recovery.†
Protein is the foundation. Beast WHEY gives you a clean, high-quality source of it in six flavours that actually taste like something worth looking forward to after a session.
Developed and approved by Eddie Hall, World's Strongest Man. Available in Chocolate Fudge Cake, Strawberry Cheesecake, Vanilla Ice Cream, Jammy Biscuit, Banoffee Pie, and Cookies and Cream.
†Protein contributes to growth in muscle mass.
Directions
Mix 1 scoop (30g) to water or milk 20 to 30 minutes post-workout.
Alternatively, enjoy at any time for a convenient protein boost without the hassle of meal prep.
Ingredients
Chocolate Fudge Cake
Whey Protein Concentrate (Lactomin) (Milk), Whey Protein Isolate (Milk, Soy), Cocoa Powder, Chocolate Fudge Cake Flavouring, Sweetener (Sucralose), Xanthan Gum.
Strawberry Cheesecake
Whey Protein Concentrate (Lactomin) (Milk), Whey Protein Isolate (Milk, Soy), Strawberry Cheesecake Flavouring, Sweetener (Sucralose), Xanthan Gum.
Vanilla Ice Cream
Whey Protein Concentrate (Lactomin) (Milk), Whey Protein Isolate (Milk, Soy), Vanilla Ice Cream Flavouring, Sweetener (Sucralose), Xanthan Gum.
Jammy Biscuit
Whey Protein Concentrate (Lactomin) (Milk), Whey Protein Isolate (Milk, Soy), Jammy Biscuit Flavouring, Sweetener (Sucralose), Xanthan Gum.
Banoffee Pie
Whey Protein Concentrate (Lactomin) (Milk), Whey Protein Isolate (Milk, Soy), Banoffee Pie Flavouring, Sweetener (Sucralose), Xanthan Gum.
Cookies and Cream
Whey Protein Concentrate (Lactomin) (Milk), Whey Protein Isolate (Milk, Soy), Cookies and Cream Flavouring, Sweetener (Sucralose), Xanthan Gum.
NET WEIGHT. 2.01kg
Warnings
Please consult your physician prior to use (especially if you have a medical condition). Not recommended for anyone under the age of 18. Do not take this product if you are pregnant or breast feeding. If you are taking any medication consult your doctor before taking this product. Do not exceed the suggested use. Keep out of the reach of children. This product is not intended to diagnose, treat, cure, or prevent any disease or illness. Food supplements should not be used as a substitute for a varied, balanced diet and healthy lifestyle.
Allergens
For allergens please see the ingredients in bold. Contains milk and soy. Manufactured in a facility that processes celery/celeriac, crustaceans, fish, milk, mustard, peanuts, soya, gluten, egg, lupin, molluscs, nuts, sesame and sulphur dioxide.
Delivery
All UK orders are shipped using a 1-2 working day service.
Free Tracked 24 shipping is available on all orders over £25, for orders under £25 shipping is charged at £4.99
Orders placed before 1pm on weekdays are shipped the same day.
Orders placed at weekends and bank holidays will be processed on the next working day.
Europe - Please allow 5 - 10 business days for delivery. Orders under 150 EUR - including shipping costs - will not incur any customs or VAT charges.
Rest of the World - Please allow 7 - 14 business days for delivery.
DHL EXPRESS WORLDWIDE - 1 - 3 business days.
All orders are shipped tracked - a tracking link will be provided in your shipping confirmation email.
Additional Charges
Customers may incur VAT charges and Customs Duty specific to their country. The buyer assumes responsibility for any importation costs. If customs and duty fees imposed by your country are not paid, we cannot accept responsibility for the items. It is essential to familiarize yourself with your country's regulations regarding the importation of goods. If an item is confiscated due to regulations, we are not liable, and any resulting charges will be the customer's responsibility. For information regarding return shipping costs, please refer to our Refund Policy.
Jäger, R., Kerksick, C. M., Campbell, B. I., et al. (2017). International Society of Sports Nutrition Position Stand: protein and exercise. Journal of the International Society of Sports Nutrition, 14, 20. https://doi.org/10.1186/s12970-017-0177-8
Schoenfeld, B. J., & Aragon, A. A. (2018). How much protein can the body use in a single meal for muscle-building? Implications for daily protein distribution. Journal of the International Society of Sports Nutrition, 15, 10. https://doi.org/10.1186/s12970-018-0215-1
This article is for informational purposes and is not medical advice. Consult a healthcare professional before starting any new supplement, particularly if you have an existing health condition, are pregnant or breastfeeding, or are under 18.
