IKR1 knock downs show an increase in day sleep and decrease in activity. 5-7 days old flies raised on normal food and 12:12 LD cycle were put in DAMS and observed for consecutive 7 days under the same conditions with 40-60% humidity. The data was analysed for sleep and activity. A and C, significant decrease in day activity and increase in day sleep, respectively. B and D, no effect on night activity and sleep. E and F, the total change in activity and sleep over the period of 7 days. Error bars show standard error of the mean (P<0.0001).