Joints are the places in your body where bones come together.
Walk more, cook food from scratch, make own sauces with less sugar and salt, cut out processed food, grow own veggies,
Increased muscle mass: Muscle mass naturally decreases with age, but strength training can help reverse the trend.
Stronger bones: Strength training increases bone density and reduces the risk of fractures.
Joint flexibility: Strength training helps joints stay flexible and can reduce the symptoms of arthritis.
Answer:
the body would usually fight both the vaccine (while the vaccine is also fighting the virus)and bacteria in body