• Play basketball on an outdoor court at 3.00p.m. barefooted.
• Swim in a cave.
• Tackle people twice your size.
• Tackle people with bones that are sharp.
• Sleep for only 2 hours and expect to be awake.
• Broadcast to people that you eat a lot in a camp where people eat very little.
  
• Collide face-on with someone's elbow

Take my advice. Been there done that.