The mild wet winter has had it's challenges for Nordic walking but the tick population has had a field day. Ticks are small, spider-like creatures that feed on the blood of animals, including people. Ticks don't fly or jump, but wait until an animal or person brushes past to climb on. They then bite to attach to the skin and start to feed on the blood (nice). Most tick bites are harmless but in rare cases they can cause infection or Lyme disease which can make you very unwell.