If so, here's a perfect opportunity!
I started an online group called "Lose and Learn" on MyFitnessPal.com for those who want to lose weight while learning new English expressions, esp. on food and fitness
Read in Japanese how I lost weight using MyFitnessPal.
It's really not dieting, but tracking your calories and taking control of what you eat. I also offer fitness tips (I've been working out and swimming for 20+ years). We can all do this better with group support.
If you're interested, I'll send an invitation to join the group. Please DM your e-mail address on Twitter, PM it on FB or G+, or send it via お問い合わせ on this site. If you already have a MyFitnessPal account, add me (TweetinEng) as a friend.
Twitter: @TweetinEng or @getglobal
G+: https://plus.google.com/有元美津世 or 英語でソーシャル