Working in an office full time consists of spending 8 hours a day in an office (40 hours a week). You may even be driving to work (more time sitting) and spending the afternoon on the couch watching TV afterwards (sitting down). Sitting too many hours a day can be detrimental to our health as well as our mood.
Excessive heat in summer can weaken our body if we do not pay attention to the sensations it causes us, and how they affect us (hotter body, faster mind ...). Regarding the practice of yoga, it is also important to take awareness of heat and how it affects us, in order to eliminate those postures and stretches that can harm us and worsen our state, and incorporate those that can benefit us and help us feel fresher.