Biking on public roads? Wear a helmet and bright-colored clothing, stay well clear of the doors of parked vehicles, move in a straight line instead of weaning in and out of the traffic, and watch for cars trying to make right turns. Scan for cross traffic at intersections and signal all turns. Don't run red lights - it's not worth the seconds shaved off your commute. Don't ride without holding the handlebars; it makes you look very hip, but when you do that, a single rock or an unnoticed pothole can throw you right under the wheels of a passing bus.
Where are you going to keep this emergency food? You don't need tons of extra space, but you do need some, ideally in cool, dry place where moisture and pests can't readily get into it. Walk around and check your most-used cupboards, closets, and storage areas. What's in there right now? How much of it do you actually use? Chances are, you have a lot of extra kitchen and home supplies lying around that could find a better home somewhere less readily accessible, like the basement.
Check dried goods: rice, flour, grains – frequently for bug infestation. You can mix food grade diatomaceous earth in with dried goods and it will kill pantry moths and weevils. It is safe for humans and pets (as long as it is food grade). It works by shredding the exoskeletons of any soft bodied bug. It is used in grain silos to keep bugs from infesting grain. You can probably get some through a feed store. Some garden centers carry it. You can also order it online, but check the shipping cost. Pantry moth larva and weevils can squeeze through some very tight fitting lids. We’ve been fooled often by them.
Don't hit the gym. Hold off with intense workouts at least until you are close to your target weight. Daily exercise schedules are hard to keep for more than a couple weeks, especially if you lead a busy life; on top of that, a drastic increase in physical activity can trigger cravings or upend your nutritional needs. If you are itching to burn some extra fat, incorporate less punishing activities into your daily routine - say, walking or leisurely biking to work.
A popular way of guarding against this kind of catastrophe is storing food at home. This is called Long Term Food Storage, Emergency Essentials, or Emergency Survival Foods and there are dozens of companies selling food specifically for this purpose. The best, including those listed below, have great tasting products with a long storage life at a reasonable cost. 

When buying food, don't fall for "diet", "reduced fat", "low sugar", or "low carbs" ice cream, yogurts, cakes, pizza, pasta, and so on - the differences are so minor that you might as well have the real thing and stop fooling yourself. Watch out for deceptive portion sizes, too. For example, Cheetos are labeled as 150 kcal per "serving", but there are almost 10 servings in a regular bag! Frozen fries are another great example: they look pretty low-cal until you realize that a serving is just 10-15 pieces or so - certainly not enough to make you feel full.
All in all, it's OK to reject armed self-defense (or shun guns in particular) on religious or moral grounds - but doing so is probably not a particularly rational decision within the scope of this guide. From a rational standpoint, you should always pick the tools that are best suited for the scenarios you anticipate (provided that the state allows you to). Of course, a firearm is not always the answer, so let's take a broader look at some of the most popular options for shooing away looters or defending yourself:
115. Generator – Generators are great in emergency situations, especially if power is crucial for medical reasons. Long-term however there is debate at how viable generators can benefit as you will need a constant supply of fuel as well as fuel storage. Not to mention if the power has been down for months and would-be scavengers are rummaging the neighborhood when they hear the sound of a generator running?? If you do plan on getting one, look for tri-fuel generators.

Radio transceiver, standard VHF marine when operating near inland shore, 121.5 MHz AM VHF guard channel capable aircraft band transceiver to contact rescuers and high overflying commercial and military aircraft visible by contrails, an optional amateur radio if a licensed radio amateur, (see Ham Radio) or an AM/FM/Weather/Shortwave radio receiver to receive precise time for celestial navigation as well as weather information
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