It takes about 8 hours for people who don't usually exercise to climb Mount Tai.

People who have exercise need 5-6 hours to climb Mount Tai.

It takes about 4 hours for people who exercise regularly to climb Mount Tai.

The time required to climb Mount Tai varies from person to person. Generally speaking, if you have never climbed a mountain, it may take about 8 hours to complete the journey. If you exercise regularly, the time required for climbing the mountain may be shortened to 5-6 hours. For those who often climb mountains or do physical exercise, it may take about 4 hours to climb Mount Tai.

However, these times are based on general estimates. The actual time required depends on many factors, such as personal physical fitness, mountaineering route, weather conditions and so on. In addition, the height and steepness of Mount Tai will also affect the time required to climb the mountain.

Generally speaking, if you plan to climb Mount Tai, it is recommended to make full preparations in advance, including physical training, proper equipment and enough water and food. At the same time, please pay attention to safety and abide by mountaineering regulations and suggestions.