Love is Evol backwards. Love is to evolve. Love will bring change in a person's heart.

growth in nature has limits.  Consider the  back issues in our species, obesity,  hip problems in large dogs etc. Check out the youtube video "Impossible Hamster" it says it well.
Our capacity to change and grow as humans is more feasible - and touches on quantum energy levels. We have barely discovered our ability to grow via our minds, hearts..this seems much more intriguing than bulking up.