The Tactical/Practical Prepper always needs to BOLO for Dual purpose activities which give you the benefit of physical exercise/training while at the same time sharpening your patrolling skills.
Bicycling is a great cardio/endurance exercise that you can do while at the same time patrolling your immediate and surrounding AO.
I am a big fan of Matt Bracken.
I suggest you start with his essays and then read his All Enemies Foreign and Domestic series.
Stay Alert, Armed and Dangerous!