Jack LaLanne tells Britney to shape up

He's the Godfather of physical fitness and at age 93, Jack LaLanne has a lifetime of wisdom at the tip of his tongue. Some of it, he's sharing with Britney Spears.

Ultimately, Spears' life is up to her, says LaLanne. She has to develop pride and discipline in herself. But if she's up for some advice, LaLanne has some.

• Spears should take the lollipop out of her mouth. Sugar is toxic.
  
  
• Spears should put the right fuel in her machine, not the stuff she's currently feeding herself -- like cigarettes.
  
  
• Spears should make fitness a top priority.
  
  

Healthy habits ideally should begin when we're young, says the man who is on a national book tour -- he co-authors the book Fiscal Fitness with retirement financial advisor Matthew J. Rettick. But we can surely make good on our mistakes as we get older.

We all might learn a thing or two from this fitness superstar. Here are a few of LaLanne's tips.

• Your waistline is your lifeline.
  
  

• Exercise is King, nutrition is Queen, put them together and you've got a kingdom.
  
  

• Don't exceed the feed limit.
  
  

• You eat everyday, you sleep everyday, and your body was made to exercise everyday.
  
  
• Work at living and you don't have to die tomorrow.
  
  

For more where these came from, check out LaLanne's official website.