or your Sim has the chance of receiving an Opportunity to change them at the Science Lab. You will need a Rainbow Gem to complete the opportunity. IF’s brought to life have a new option when walking called“The Strut
If any noticeable change, maybe they need more sleep than before, walk a bit slower than others and have the option to go walking instead of jogging and/or have light weight lifting when it comes to the gym equipment? I've played a simulation of my family, modeled after us from about ...