I can understand the value of neck strengthening exercise to strengthen the neck.... But do no see how this can reduce impact on the brain. Also. body mass will only be a factor if the body is the point of impact. If the head is the point of impact, the body's mass will not make a difference.

If these are tips to try to be able to continue to play sports like football, the risk of more impacts will still be great.

btw, The fish oil should be chosen based on its levels of Omega 3's and DHA and EPA. Some fish oils are very low in these components.