Here's a few ideas...
1. The headline is weak.
Maybe something more along the lines of...
"How This Secret Explosive Muscle Building Formula
Turned A Scrawny 149 Pound Weakling
Into A 190 Pound Muscled Chick Magnet..."
Now you can discover the secret muscle building formula that won Vince DelMonte the 2005 Canadian Fitness Male Model Championships AND had him featured in the highly respected international magazine Maximum Fitness.
An explosive, unique approach to build your body into rock hard muscle in six months or less proven to work even if you've got "skinny genes" or you've tried every supplement and program on the market.
"Who Else Wants A Body Of Rock Hard Muscle...etc etc.
2. Have you tested using an optin landing page instead of a sales letter to capture email addreses.
3. Instead of the free report...
The Top 20 Ways To Screw Up In The Gym -
Side Step These Suicide Training Errors
Try calling it a FREE Email Course (Normally $2

20 Ways to screw up in the gym.
And send out a series of at least 7 (as many as 20) emails each leading to the day's lesson online.
Each lesson links to the sales letter for your product.
Changing the way you follow up with autoresponders can make the biggest difference to your response rate both for this product and for any other product you promote to your list in the future.
4. This one is simple. Get a little more white space (another 5-10 pixels between the copy and the side borders.
5. If you're offering "Six Months Of Free Online Email Coaching".
You might want to create a membership site, give your buyers 1 month free membership when they buy the ebook then start charging them monthly.
Even if it's just $10 a month and only 1/4 of your buyers stay as members you do the math on what that does to your income.
Hope something here helps.
Kindest regards,
Andrew Cavanagh
FREE Audio Online Copywriting Course