A Guide to Manual Handling
This was the part that made me want to post the video.Center of Gravity, COG
This is an interesting video.
It demonstrates that in lifting, you need to keep the load, close to the body's Center of Gravity.
The farther away the load is from the body's Center of Gravity, the greater the Torque; which magnifies the weight/load beyond it true load.
This was the part that made me want to post the video.