Five resolution saboteurs & 5 hot new fitness crazes

Five things that'll sabotage your resolutions

Don't commit to going to the gym from now until the end of the year.  

Why you should start with just 5 weeks 

Also: 

• Ways to stay motivated
• Cool weight-loss tools  
• Healthy-eating resolutions

5 contenders for next big fitness craze

Kettlebells, Power Plates, and Zumba may be the keys to getting in shape in 2011.  

No boring options 

Also: 

• Gyms give breakup advice
• Best, worst health trends
• Everyday energy boosters