we spent about a week between 4k-8k elevation before Whitney (came from sea level before that) and felt great. Minimal to no symptoms of elevation sickness. We passed many people that were hurting pretty bad on the trail. If you have no experience doing physical exercise at altitude and you only give your body 1-2 days to adjust before Whitney, you are going to be hurting. It's still possible to do it, but be aware of what you're getting yourself into.
This is gospel! Amen, brother.
Congratulations
