Frequently, problems with thyroid and fatigue leave people feeling tired all day with difficulty sleeping at night. Their fatigue is often better when their temperatures are higher (perhaps in the late morning) and worse when their temperatures are lower (perhaps in the late afternoon).requently, problems with thyroid and fatigue leave people feeling tired all day with difficulty sleeping at night. Their fatigue is often better when their temperatures are higher (perhaps in the late morning) and worse when their temperatures are lower (perhaps in the late afternoon).
Most modern adults breathe much faster (about 15-20 breaths per minute) than their normal breathing frequency. The respiratory rates in the sick persons are usually higher, generally about 20 breaths/min or more.
Each breath exchanges a volume of 500ml of air between our lungs and the surroundings, known as the tidal volume. So, a reduction of 6% of oxygen means that we consume 30ml of oxygen per breath. Normal breathing rate is at 12breath/min, corresponding to an oxygen consumption of 360ml/min. Scaling up, this gives an oxygen consumption rate of 520L/day or 740g/day. 3. From oxygen required to perform metabolism.