Depends on circumstance in my case: 1 Came of descending a hill hit black ice (in traffic) - no problems 2 Tripped on paving stone in London - gave my self

Depends on circumstance in my case: 1 Came of descending a hill hit black ice (in traffic) - no problems 2 Tripped on paving stone in London - gave my self concussion and had to take the day off.