(Ω)=Significant change on comparing female control and exposed to short-term cold at night. (∞)=Significant change on comparing male exposed to short term cold at night with male exposed to cold weather at night. (®)=Significant change on comparing female control and exposed to short-term cold at morning. (O)=Significant change on comparing male control and exposed to short-term cold at morning.

Figure 2: Changes in thyroid hormone levels.