There are a number of ways for your attic to exhale. Pot vents are very common exhaust device. These are made to go near the peak, but we see many mounted down-roof, which creates problems.
Your attic needs a way to get fresh air in and the hot, moist air out. This is true in both summer and winter. Ideally, attic inhalation involves fresh air enters at the eaves, sweeps up the roof line, carrying the heat and moisture with it, and exits at the peak. Soffit vents are a solution.