		Light exposure time	Body temperature	Body weight	Blood glucose
Light exposure time	Pearson correlation	1	0.661**	0.915**	−0.020
Light exposure time	P value		0.000	0.000	0.926
Body temperature	Pearson correlation	0.661**	1	0.787**	0.117
Body temperature	P value	0.000		0.000	0.586
Body weight	Pearson correlation	0.915**	0.787**	1	0.197
Body weight	P value	0.000	0.000		0.357
Blood glucose	Pearson correlation	-0.020	0.117	0.197	1
Blood glucose	P value	0.926	0.586	0.357