Okay, from your comments, here's a modified version of the challenge:
Week 1: Start Keeping a Food Journal. Each day, write down what you eat as you go through the day. Optional: Also write down what time you wake up, the
time you eat, how much you exercise, how much water you
drink and what time you go to bed.
Week 2: Continue Week 1 habits. Add: Eat 2 servings of fruit and 3 servings of vegetables per day.
Week 3: Continue Week 2 habits. Add: Find a new way to prepare some healthy fruit or vegetable that makes it more enjoyable (i.e., edible). And share this with the rest of us.
Week 4: Continue Week 3 habits. Add: Exercise a minimum of 30 minutes per day, 5
days per week. This can be as simple as brisk walking. The goal is to
raise your heartbeat. If you're feeling a good cardio workout, working
up a sweat, increased heart rate, it counts. Also, the more that you can
vary your exercise routine the better. So, do cardio one day and
weights another. Try different forms of exercise (i.e. an elliptical one
day and swimming another). Try to establish a routine. If you must, you
can split this into three 10 minute segments for a total of 30 minutes.
Continue Week 4 habits. Add: Drink at least 8 glasses of water per day. However, since some people find it hard to drink that much water, you could change this to fit YOUR MAXIMUM healthy amount.
Continue Week 5 habits. Add: Take supplements each day as recommended by your doctor or other health professional, including dieticians (but not including information from magazine and newspaper articles).
Continue Week 6 habits. Add: Start your day with"Quiet Time" every day. This
should be at least 30 minutes of meditation, and can include your own
scripture study or other medication that you currently do.
Continue Week 7 habits. Add: Sleep at least 7 hours each night.