US health advocate John Sweetgall, dubbed the “pied piper” of walking, is on the Island to promote Public Health Week.Mr Sweetgall joined Health Minister Zane DeSilva at a Walking Expo at City Hall to highlight the Island’s health clubs, organisations and businesses that promote regular exercise and healthy eating.As the guest speaker for Public Health Week, Mr Sweetgall will conduct “lecture sessions and hands-on activities” as Government reminds the public of simple ways to stay in shape.