Do you feel safe when cycling on the road? Do built up, urban areas with heavy traffic effect the way u feel when riding? What are the biggest factors that you feel effect personal safety? Are there any key stimuli which cause a psychological reaction and change in emotion when riding?
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definitely do not ride a bike with a stretched hamstring. The rotary motion shortens the muscle making it even tighter. you should aim to stretch regularly, but gently. Remember RICE Rest, Ice, Compression, Elevation. Good luck, get well soon. hope this helps