Think of your cell phone as a diet coach, your quit-smoking partner, your own personal health manager. Really. Just sign up with these three companies and your cell phone will help you stay well.

INTELECARE
For $5 a month, text messages, e-mails, or voice mail reminders will alert you about prescriptions and appointments.

QUITEXT
If you wish to kick your smoking habit and have a spare $20, supportive tips and advice will come your way for six weeks.

SENSEI
You log your weight-loss goals and fitness habits and you'll get daily meal recommendations and weekly grocery shopping lists. Motivational notes too. All for $6 per week.