This document identifies potential hazards associated with various sports and physical activities. It lists examples of hazards for different sports, including sailing (depth of water, currents, other water users), cross country running (slippery surfaces, uneven ground, weather conditions), swimming (depth of water, diving technique), rock climbing (use of ropes and anchors, loose rocks, steepness), circuit training (equipment use, space, noise levels), gym machines (incorrect use, speed, fatigue), beach volleyball (uneven ground, sun exposure), mountain walking (cliff edges, weather, terrain), tennis (slippery surfaces, footing), marathons (weather, crowds, interference), hockey (slippery surfaces, sand/water, footing), park