Some of the key symptoms of thyroid fatigue include: Feeling like you donât have the energy to exercise, and typically not exercising on a consistent basis. A heavy or tired head, especially in the afternoon, as your head is a very sensitive indicator of thyroid hormone status.hyroid-related fatigue begins to appear when you cannot sustain energy long enough, especially when compared to a past level of fitness or ability. If your thyroid foundation is weak, sustaining energy output is difficult.
Medical textbooks suggest that the normal respiratory rate for adults is only 12 breaths per minute at rest. Older textbooks often provide even smaller values (e.g., 8-10 breaths per minute).
This is called the ventilation, or respiratory rate.1 The average heart rate, for a healthy adult, is around sixty to one-hundred beats per minute, but it can be lower, depending on the athleticism of a specific person.2 This means that each breath, on average, would last about five seconds, (about two and a half seconds to inhale, and two and a half seconds to exhale).