Table 2. Correlation with intense physical activity during the free time.

		My sleep is short	Preference of having more energy during the day	Bad quality of sleep
INTENSE PHYSICAL ACTIVITY DURING THE FREE TIME minutes / day (mean rank)	None	106.95	99.19	89.46
	Mediocre	85.22	89.85	75.69
	Enough	74.74	70.97	93.15
	A lot	82.92	78.69	77.45
	Very-very long	72.02	78.24	59.00
Kruskal Wallis test		14.032; p=0.007	15.153; p=0.004	10.679: p=0.030