Fig. 2.

PSQI score distribution across different healthy behaviours and healthiness score. Sleep quality (PSQI score) is consistently poorer (higher) in participants who adopted an unhealthier lifestyle since the beginning of the lockdown as compared to people who did not change their habits or improved their behaviours. As expected, PSQI score (poor sleep quality) also significantly and positively correlates with the global healthiness score (adoption of unhealthier lifestyle). Significance code: ∗ < 0.05; ∗∗ < 0.01; ∗∗∗ < 0.001.