Good luck. I once got lifted by a woman at work by using cunning strategy
She was the same height as me but quite a bit heavier. One day we needed to get something down from a high shelf and there was no ladder around. I volunteered to lift her but she said "No way....I'd break your back. You're too slim and light to lift me" I replied in a jokey way "alright then.You'll have to lift me" I could n't believe my luck when she agreed ! She told me to get on her back. I did so and got the box down from the shelf. I was so turned on when she did this. She said that I was incredibly light. As a bonus she did it again when we put the box back up.