Las mejores posturas sexuales para evitar daños en la espalda

Hoy encontré este estudio que prometia. ¿A quién no le duele la espalda?Pues me encantaría encontrar la lista de las posturas más recomendables y busqué este artículo, que a mi gusto se queda e_ Chris:I know I’m only 14 but I want to move out.(11 January 2017) Chris:My dad calls me bipolar quite a bit (even though [...]
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Yuk:
I have a car, but it needs to be fixed.
(12 January 2017)

Yuk:
I have a hideous face, an ugly body, no money, and a small penis.
(12 January 2017)

Alfreda:
Let no love fall victim to circumstance?
(12 January 2017)

Alfreda:
Any of you familiar with it care to share an example?
(12 January 2017)

Liana:
What does Chance and Circumstance mean to you?
(12 January 2017)

Liana:
I'm more leaning to the personal aspect though.
(12 January 2017)

Liana:
As related to life be it personal or professional.
(12 January 2017)

Miguelina:
What does this mean We are not creatures of circumstance; we are creators of circumstance?
(12 January 2017)

Cecila:
Please spare me the judgment I need serious suggestions and advice?
(12 January 2017)

Cecila:
Again, this is not his problem but mine, he tells me I'm beautiful all the time and he wants to make love to me all the time, it's just my problem.
(12 January 2017)