Common use of Lifting Clause in Contracts

Lifting. □ No pain □ I can lift as much as I need without pain □ Pain; does not increase with time □ I can lift as much as I need; but causes pain □ Pain; prevents me from sitting more than 1-hour □ I can only lift moderate weight due to pain □ Pain, prevents me from sitting more than 30-minutes □ I can only lift light weight due to pain □ Pain, prevents me from sitting more than 10-minutes □ I can only lift weight if it is conveniently positioned □ Pain, prevents me from sitting at all □ I cannot lift any weight due to pain