Sareth,

Second Impact Syndrome usually requires a impact to the head, not just a simple jerk. That does not mean that you can do jumping jacks or other vigorous activities that cause intense movement of the head.

Most of the cases of Second Impact Syndrome are caused by another concussion like event. There is a cumulative effect of shaking the head that should be avoided. Riding down a jarring road can be a problem just as a ride in a shaking roller coaster.

Just take it easy for a few more weeks while you brain has a chance to heal.

A simple way to understand the effect of different movements on the head is to wear ear plugs. It will magnify the sense of the impact of planting your feet as you walk or run. You can use this system to develop a softer walking or running gait. In the long run of your life, having a smoother walking and running gait will not only help your brain but it will also be easier on your knees and hips.

Don't spend you time anxious about this. Anxiety is not good for the healing brain. After a few weeks, you can slowly introduce more movement to your day. Then wait a day or two before trying more exaggerated movements. often, the symptoms caused by stresses to the brain will not show up until the next day.

Relax, get good sleep and nutrition and give your brain time to heal.

My best to you.