Know your partner and limit your number of partners, by having multiple partners you will have a higher chance of getting STIs. Use a latex condom, by using one of these you will lessen your chances of getting an STI greatly
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Orthostatic hypotension — also called postural hypotension — is a form of low blood pressure that happens when standing after sitting or lying down. Orthostatic hypotension can cause dizziness or lightheadedness and possibly fainting. Orthostatic hypotension can be mild.
25% is what the answer is
Gout is a form of acute arthritis that causes severe pain and swelling in the joints. It most commonly affects the big toe, but may also affect the heel, ankle, hand, wrist, or elbow. It affects the spine often enough to be a factor in back pain. Gout usually comes on suddenly, goes away after 5-10 days, and can keep recurring. Gout is different from other forms of arthritis because it occurs when there are high levels of uric acid circulating in the blood, which can cause urate crystals to settle in the tissues of the joints.
With stuff like this, you can find it easily with a quick Google search. I suggest putting it in your own words :)