Heavy legs, gasping for air - Wales stars reveal what it's really like playing at altitude as Pivac's men take on South Africa
![Heavy legs, gasping for air - Wales stars reveal what it's really like playing at altitude as Pivac's men take on South Africa](https://i2-prod.walesonline.co.uk/incoming/article24303986.ece/ALTERNATES/s615/1_GettyImages-81567554.jpg)
Wayne Pivac's Welsh team will play their first two Tests against the Springboks on the High Veldt. We spoke to players who have experienced the problems that can cause