### Comment:
What are some popular sex positions for couples?

### REPLY:
Some popular sex positions for couples include missionary position, doggy style, cowgirl position, reverse cowgirl, and 69 position. Missionary position involves the man on top, with the woman lying on her back. Doggy style is when the woman is on all fours and the man penetrates from behind. Cowgirl position involves the woman straddling the man and controlling the rhythm and depth of penetration. Reverse cowgirl is similar, but the woman faces away from the man. The 69 position involves mutual oral stimulation, with partners lying on their sides, heads towards each other's genitals.