Do we believe in the four Yugas like Hindus?
Satya Yuga was 1.7 million years. Avg human life expectancy was 100,000 years.
Treta Yuga was 1.3 million years. Avg human life expectancy was 10,000 years.
Dvapara Yuga was 864,000 years. Avg human life expectancy was 1000 years.
Kali Yuga will be 432,000 years and the life expectancy will be 100 years, coming down to 20 years at the end of this yuga.
Modern humans have only existed for approx 200,000 years and generally lifespans are always increasing. So this information on Yugas is wrong.