3 ms·Why did they row in 2 hour shifts 24/7? Why not 4 hours or 6 hours so you can get some longer sleep?by cinntaile 5y agoWhy did they row in 2 hour shifts 24/7? Why not 4 hours or 6 hours so you can get some longer sleep?jgrahamc 5y agoI believe the answer is... try rowing for more than two hours without a break.cinntaile 4y agolol I guess that makes sense.