I am quite sensitive to spring tireness. The clock change just adds to that, for me. Tireness over the day and a longer nap at afternoon are the results.
I could live without all that.
Farmers say their animals, especially egg-chicken and milk cows, are irritated and produce less milk or smaller eggs for some time after each change, too.
Think I am lucky that I do not produce any of the two - just grumpy mood...