Mark Felix: Supplements, Diet, and Best Lifts At 6 feet 4 inches (193 cm) and 310 lb (140 kg), Mark Felix aims to consume at least 7,500 calories each day, as well as numerous supplements, to maintain his massive bulk. Below, we take a look at what supplements he takes, at what his diet consists of, and at some of his incredible lifting recordings. UK Fitness ProSep 18 · 4 min read