According to the recommendations, the maximum weight that men should lift at work is 25 kg. The recommended limit for women is 7 kg. '> The safest way of lifting a weight is by using lifts that were designed for that purpose. Heaving a heavy object such as a stone up or down a hill requires a significant effort and can cause back injury if done incorrectly. Lifting objects that are too heavy for one to handle safely is also dangerous because it puts oneself at risk of suffering a musculoskeletal disorder. The amount of weight you can lift is limited only by your strength and health. If you are in good physical condition, then you can lift any amount that does not pose a threat to yourself. However, if you have a preexisting condition, such as osteoporosis, then you should lift no more than 10% of your peak strength. This ensures that you do not put yourself at risk of injury. If you are not strong enough to lift a certain amount of weight, then you need to find someone who is. A professional strength-training program will help you increase your muscle mass, which will make it easier to lift heavier objects. There are several ways to lift weights safely.