Mental focus at the gym for me is very important. So is flavour. Some pre-workouts taste medicinal, but C4 is absolutely known for their delicious flavours with my fav being pink lemonade.
I only take this on training days, about 30 minutes prior to hitting the gym. It helps me beyond words to get through cardio which is my struggle - I despise indoor cardio. This gives me the push and the focus I need to get through, and helps me get through wait training after that. Even when taken 3 hours before sleep, I find I use all of the energy this gives me so I don't lay awake at night (like I have experienced with other pre-workouts).
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