Soldiers in the IDF are armed all the time. Even when off duty, you keep your weapon with you, but not loaded. A mag is generally attached with elastic cord to the handguards, buttstock, or pistol grip for fast access. When off duty, you are not always required to wear your uniform. And yes, everyone is in the reserves. Unless you go career, you finish your initial enlistment (at age 18 it is 3 yrs for boys and 2 for girls) and then serve one month out of the year until you are 54. Not only does this keep a well-trained and highly effective fighting force at the ready at all times, but it keeps almost every body in shape. It's very rare to see a girl with as much weight on her as the one in the red jacket (no offense to anybody who might be overweight, I'm just saying that this is how it is in Israel). But the best part is that walking down the beach in Tel Aviv is better than Brazil!