Probably more to do with how likely you are to be hit jumping a red and hire likely your knees are to get damaged with then out in the cold. Although doing both once would both have quite lie probability of happening i reckon.
@snottyotter started
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Probably more to do with how likely you are to be hit jumping a red and hire likely your knees are to get damaged with then out in the cold. Although doing both once would both have quite lie probability of happening i reckon.