Improving athletic performance requires your body to be consistently pushed beyond comfort, a feat which requires mental grit, tenacity and willpower.
Navy SEALs are renowned for their mentally gruelling training programmes, which test the boundaries of human endurance.
This infographic from SealGrinderPT takes a look at some of the most powerful techniques Navy SEALs use to cope with their brutal boot camps as well as the real-life combat situations they work in.
It examines how anyone can use these techniques to improve their own mental conditioning in order to achieve their fitness goals.