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yes, it's very possible to explore the way people live their sexual energy according to their natal chart. this is because Mars actually represents this part of our personality.

however, it is important to look at everything about the placement, going beyond the sign, also exploring the aspects and the house.

mars in aries (domicile) experiences sexual energy in a more uninhibited, intense way. aries predominantly carnal.

mars in taurus (detriment) may lack as much energy if there is no greater stimulus (love). it's a more sensual energy, that seeks to enjoy the moment without so much speed, it's more patient. comfort and security are important, in addition to greater contact through the stimulation of the senses.

mars in gemini represents the search for different stimuli at the same time, and someone who has this placement may have a somewhat fickle sexual energy that is difficult to predict.

mars in cancer (fall) may lack that intense energy, being much more restrained, and prefer to deal with sex when their heart feels safe (or at least this tends to be ideal for this placement).

mars in leo has a lot of sexual energy, and has a habit of looking for a relationship of being satisfied/cared for or doing the opposite.

mars in virgo has sexual energy, but for this to be put into practice, for others to see this sexual energy arising, the natives of this placement feel that something needs to make sense. sex is an experience that needs to satisfy the body.

mars in libra (detriment) have little sexual energy in the sense of attitude, assertiveness, but love to indulge and give pleasure to the person they are with. sex is harmony.

mars in scorpio (domicile) has a lot of sexual energy, being very connected to sex, seeing this as an experience of exchange and deep contact between people, as well as seeking some kind of "recharge" through it.

mars in sagittarius has a lot of sexual energy, seeks adventure, and likes to surprise and be surprised.

mars in capricorn (exalted) represents a restrained but planned sexual energy. when sex comes, it's in a sensual way, and after the person feels safe for it or when the person feels some assurance that it will make sense to open up sexually.

mars in aquarius represents a somewhat unpredictable sexual energy, with a lot of idealization and a tendency to achieve crazy things through sex.

mars in pisces definitely has less sexual energy than domicile placements (mars in aries, mars in scorpio), it's a poorly assertive placement, as is mars in cancer (and libra), but this person's energy comes to the fore in a profound way and with a lot of surrender when she/he feels CONNECTED to someone.

and it is also important to look if scorpio/8th house is present in any placement.