So its acquired immunity and the cells responsible are the B lymphocytes that produces antibodies against the virus. Memory is keep since first encounter of the virus by the immune system by way of the antibodies that was initially produced. The antibodies are there already, which makes it fast to act upon when expose again.
Answer: okay well cardio exercises don’t work well.
so try more core and endurance exercise. :)
your musculoskeletal system responds to stress by tensing up your muscles. Muscle tension is a response to stress. If you've ever noticed that you're stressed out youll notice your body will naturally tense up. Once the stress passes your muscles will relax.
vitamin k helps with blood clots
You should go to the doctor or put some ice it might help keep your back straight too