A temperature of 70°C (158°F) is extremely high and well beyond the normal range that humans can tolerate. Sustained exposure to such temperatures would be incredibly dangerous and potentially fatal.
The human body has a core temperature of around 37°C (98.6°F), and any significant increase above this range can cause severe damage to bodily functions. When exposed to high temperatures, several physiological mechanisms come into play to maintain the body's internal temperature within a safe range. These mechanisms include sweating, increased blood flow to the skin, and seeking cooler environments.
However, in the case of prolonged exposure to extreme heat, such as 70°C, these mechanisms would likely fail to adequately cool the body. The risk of heatstroke, organ failure, and death would be very high. Even short-term exposure to such temperatures can cause severe burns to the skin and respiratory distress.
It's important to note that surviving in extreme heat depends on various factors, including humidity levels, individual health and fitness, clothing, and access to water and shade. However, a temperature of 70°C is far beyond what the human body can tolerate without suffering severe consequences.