The most common though that I see in BJJ is the cervical sprain or strain. The cervical spine is the most mobile segment of the spine however it puts it at a high risk of injury. Cervical sprains/strains are soft tissue injuries. A strain is linked to muscle, while a sprain is linked to tendons.
However, for some people, effects are much shorter and they have to take modafinil 2X per day (albeit this is not that common). For other people, effects can last 20-24 hours. It all depends on how your body processes it.
Even the half-life has warn off completely. The adderall AND it's metabolites could even be out of your system in 48 hours. You have a powerful mind bro. Anyways adderall XR is supposed to last for 12 hours.But it depends how high your tolerance is, if you ate before you took the medication, your metabolism, etc.'ve taken 15 mg of Adderall a few times. I'm about 160 lbs and it lasts me about 4 hours. i usually take another before i come off of the 1st. the only problem is that i â¦ get jittery and can't sleep. but i think it's worth it.