2013worldsspeedo Michael Jamieson
Courtesy of: Joan Marc Bosch
BATH, United Kingdom, November 30. OLYMPIC silver medalist Michael Jamieson took to Twitter today to explain how he had to go into the hospital and have his heart restarted after an irregular heartbeat.

As Jamieson detailed on Twitter, he's been cleared to return to training already.

Jamieson is due to compete for the European All-Stars as part of the Duel in the Pool next month.