The main contributing factors that cause back injuries in the workplace are lifting and/ or carrying heavy loads, frequently twisting and bending over, and hard physical work.
The answer is consumed. Think of a gallon of milk. There will always be an expiration date to let you know that after that date, it becomes too old to drink. This should not be confused with a "sell by" date, which signifies the deadline for each product to be taken off the shelf.
It helps you more than the other physical activities
