Lino is as thin as a whippet, all sinew and lean muscle, and dark with the sun.

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It crouched there, a tightly wound spring scanning the horizon for prey, all lean muscle, tense sinews against the roiling clouds.

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Harper defines toning exercises as body-specific, weight-bearing routines that build lean muscle, often using no equipment and only your own body weight as resistance.

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Dr Golomb and her team believe that antioxidant compounds, called catechins, can improve lean muscle mass and reduce weight - at least studies in rodents would suggest this might be so.

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This is because BMI does not distinguish between fat mass and lean mass (muscle, water, bone, etc).

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It is important not to cut carbohydrates significantly on days that you are exercising strenuously, as this will negatively affect your energy level and will probably result in loss of lean body mass (muscle, bone, and water) which can impair weight loss efforts long term.

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It will take a bit of trial and error to find the right amount of additional calories to build muscle and stay lean.

CNN: How should I eat to build muscle mass?

This makes all the difference with a lean meat like turkey: With each wallop, muscle fibers and connective tissue break down and the meat becomes ever more tender.

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"With low-fat diets, we see a lot of skinny fat, where they get lean, but their body fat goes up because they're losing muscle, " Jampolis said.

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In addition, research suggests that consuming lean protein 15 to 20 minutes before, during and within one hour of working out may help improve muscle gain.

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