You don't have to be double-jointed or a contortionist to attempt Kama Sutra! From 'suspended union' to 'yawning posture,' we've explained the basics of five popular sex positions.
A new vaccine that could potentially prevent the spread of the chlamydia was shown to be safe and effective in a phase 1 trial. If it’s shown to protect against chlamydia in phase 2 and phase 3 trials, it could prevent millions of STDs worldwide.
