Ten minutes in ten days.
Take each day during this drill a length of land and walk it with no breath. Count your heart beats and monitor them everyday. Learning to listen to yourself is a instant way to increase your awareness and let you know when pushing something or going somewhere may not be the healthiest choice. There is always a before to the attack. Not always an after.
Remember this and make sure your training keeps you humble.
After ten days switch to tying your laces with no breath or anything that suits your needs. Combining two things together makes them more than just their sum.