If you can overcome any issues with your masculinity, you might try starting Yoga and/or meditation. Even just a 10-20 minute "timeout" doing either can do wonders for stress. Or you might even take it the other direction and go aggressive...like lifting weights, push-ups, or punching bag. Personally I go with meditation and circular breathing when stressed. Circular breathing is deep slow breaths in through the nose, out the mouth, but with no pauses in between.