Although I felt ENERVATED after packing boxes for six hours, a quick swim in the pool gave me the energy I needed to finish loading the moving van.
Definition
This sentence represents Cause/Effect. You can see the cause when the narrator talks about how exhausted he was before taking a swim in the pool. Consequently the effect of that swim was more energy to keep on doing his work. This is how you can see the cause/effect of the swim in the pool.
