1. High-intensity labor: agriculture and animal husbandry usually require heavy physical labor, such as farming, planting, harvesting, animal feeding and reproduction. These jobs may require standing, bending over and lifting heavy objects for a long time, which will bring a certain burden to the body.
2. Long working hours: agriculture and animal husbandry are usually related to seasonality and weather. During the busy farming season, workers may need to work long hours, including in the morning or evening, to adapt to the climatic conditions. Working long hours may lead to physical fatigue and mental stress.
3. Working environment and conditions: The working environment of agriculture and animal husbandry may be harsh, such as high temperature, cold, wet or messy environment. These situations may increase the difficulty of work and physical exertion.