Because caffeine increases the production of stomach acid it may worsen ulcer symptoms or cause acid reflux ("heartburn").
No
no
yes
The most common cause of concussions is checking, or using your body to gain a positional advantage.
well they are about the same they always have concussions
i have had two concussions and both times i suffered from fatigue. i would get tired from easy every day tasks.
The verb for worst is worsen. As in "to worsen something or someone".
The opposite of to worsen would be to improve, or to make better.
The state of your heart will worsen if you continue smoking.
No
mohammed ali