Proffee (protein + coffee) mixes protein shake with iced coffee, becoming TikTok fitness trend (2021) promising convenient breakfast and caffeine+protein combo. While nutritionists questioned combining stimulant with protein absorption, gym-goers embraced efficiency, with some brands launching pre-made versions. Taste varied wildly based on protein powder quality, often resulting in chalky disappointment.
Sources: TikTok Fitness Trend Reports 2021, Protein Shake Market Data