Sciatic Nerve problems - please help!

On this edition of the Ask Coach Parry podcast, with being less than a month out from Comrades, questions have come in thick and fast. So for the next week or so we’re going to be answering all the questions that were posted and the first one came through from Brett Driver. Lindsey, Brett says he’s having a problem with his sciatic. He says, please help, his right foot has gone numb, what can he do to sort that out?