Whey protein is regarded essential for growing bigger muscles. Advised is to take in protein just before and after the a hard work-out in the gym. With the Hifuar 600ml electric protein mixer you have your protein shake ready in literally seconds! Just drop a scoop of two of your favorite protein, a bit of water or milk and press the button to shake things up. The mixer needs 2 AA batties to run and is easy to handle.