Yes, you can put whey protein in hot coffee. Heat unfolds whey but does not destroy it. Learn why it clumps, how to mix it smooth, and when collagen is the easier pick.

Whey protein powder keeps its quality for about 12 to 18 months at room temperature. See how long an opened tub lasts, how to tell it has gone bad, and how long a mixed shake keeps in the fridge.

Collagen is not a complete protein and will not build muscle. Whey will not do anything for your skin. Here is what each one is actually for, and whether you need both.

Whey isolate costs more and gives you less powder. Here is what the extra filtering removes, when it is worth the price, and when regular whey is the smarter buy.