One more round up from last year this week (read our Best of 2015 Part 1 and Part 2), along with how to keep lean year round and not just work your ass off in January and then for a few weeks before your summer holidays, clearing up creatine and caffeine confusion, why insulin probably isn’t the cause of your relentless hunger and what’s good and not so good about Crossfit.

Lifehacker’s best health-related posts of 2015 in one easy to read blog post. There’s a real mix here, some of which we have shared individually before, many of which will be directly useful to read for you and your clients.

You can find the blog post here.

With us still being just a couple of weeks into the New Year, you no doubt have new clients who are on the fat loss bandwagon. Here’s The Poliquin Group reminding us it’s all about your lifestyle, not quick fixes, and let’s you know how best to go about making sure your clients stay lean long term.

You can find the full post here.

We shared this last month, but we’re sharing it again because, you know, it’s a best of post.

Kiefer, author of Carb Nite and Carb Backloading, explains when it’s probably best to use caffeine and creatine while using one of the above protocols. The post is a handy guide for anyone who likes to use these supplements to help with their fat loss and muscle gain.

You can find the post here.

Stephan Guyenet here writing a short blog post arguing against the notion that hormonal imbalances and, specifically, insulin are the primary causes of fat gain in most people. As almost always when it comes to nutrition, it’s much more complicated than that.

You can find the post here.

Tim Ferriss interviews Kelly Starrett (author of my  favourite mobility book, Becoming a Supple Leopard). A lot of trainers have a lot to say about Crossfit and Kelly is in a better place than most to go through what he sees as the best and worst things about it.

You can find the full blog post here.