By chance, my relative who is a physician gave me a copy of this week's American Family Physician which had an timely article on current concepts in Concussion:
https://www.aafp.org/afp/2019/0401/p426.html
On the topic of activity, while everyone is different and individual treatments apply, the article said the current American Physician medical consensus is now changed to encourage return to normal daily routines as tolerated after 24-48 hours of initial rest.
Specifically the article cites
2 studies indicated the extended rest lead to detrimental symptoms and feelings of anxiety and isolation.
1 other study indicated 5days rest had no benefit over 24-48 hours of cognitive/physical rest. It says increased symptoms from the extended rest group (subject group here was collegiate athletes and military academy personnel).
Of course if activity not tolerated, and symptoms triggered, need to step back scale back, and severity of the injury and injury history all individualizes the treatment too.
A total of 8 studies form the consensus that after the brief rest of approx 24-48hrs, individuals should be
encouraged to (gradually) return to normal activities (as tolerated).
2 of the 8 citations indicate gradual increase of activities that do not trigger symptoms is safe and may expedite recovery.
The gradual steps are as below and guidance is min 24hrs symptom free between each step up .
- routine daily activities
- light routine activities or light nonimpact aerobic exercise
- light activity specific to occupation or academics light sport-specific exercise
- moderate activity sport-specific noncontact training drills
- intensive activity full-contact practice
- unrestricted activity and return to play
Here is also a screenshot of the page as I assume most here are not subscribers to this periodical, lol.
If anyone else is interested in the article, I can forward some pictures of the article to you. It is more about the general trends and how to perform the initial diagnosis, standard treatments and standard outcomes. If you have had extended circumstances or individualized diagnosis; your individual symptoms, tests and treatment of course take precedence.
Given that one of my issues is memory recall this will be a major help for me. Usually if I can find the key topic in my brain then I can get to the rest of it so now I just need to strategize what to put on that card. My professor is a funny guy though, he commented that he was doing it mostly because he finds it hilarious to watch students try to read the tiny print on their cards when he allows it. 
