Mars in the 1st house raises personal energy, drive, bodily reaction, the desire to act first, and the need to defend your territory. The period makes you more noticeable in movement: gait, voice, argument, decision, and speed of response. Strength wants out and does not tolerate waiting well.
This is a time for beginnings, sport, physical effort, a brave conversation, an independent decision, and leaving a passive role. But Mars close to the image of "I" quickly touches pride: criticism sounds sharper, and someone else's delay is felt as an obstacle.

