It's always too early to quit.
Begin to be now what you will be hereafter.
You never know what motivates you.
After a storm comes a calm.
Things do not happen. Things are made to happen.
Leap, and the net will appear.
If you can dream it, you can do it.
If you're going through hell, keep going.
Who seeks shall find.
Either you run the day or the day runs you.
There's a lot of interest from the medical community on how things develop in microgravity, and the hope, later, that is expected to apply to what the changes are in humans as well.