When my friend walked into the room after our work out holding his protein drink, I didn’t think much of it. I continued to watch TV while sipping on my own concoction of post-workout goodness. Suddenly, I heard a “check this out” coming from his direction. He held the cup in front of my face and what I thought was merely another shaker cup filled with a protein mix was actually swirling inside of the bottle! I’ll be honest and say that I’ve never heard of such thing before. I’ve always been a bit wary of shaker cups because my experience has always been having to scrape the extra protein powder out of the bottle that gets stuck to the bottom, let alone the putrid smell that builds up with time. But alas, my life has forever changed since I’ve been introduced to electric shaker cups. Intrigued, I set out to find the best one on the market. Here’s what I found.