With the economy being in such a slump, gym memberships are quite often a personal expense that is the first to go for those seeking to cut costs.  However, this is not an excuse to let go of your fitness regime.  Whether you are an avid gym rat or exercise beginner, these 7 exercises are fast, effective, and can be done right in your home with little to no equipment necessary!   Now there is no excuse to let your weight get out of control, and always remember that no pain should occur doing any of these exercises.  If you feel any discomfort please stop the exercise and stretch your muscles out.  Set mini-goals for yourself such as being able to run a mile within 1 month or do 10 real push-ups without stopping!  Whatever your fitness level is, these exercises will tighten and tone your muscles, while increasing your mood by releasing endorphins, the feel good hormone produced in your brain.