How best to increase lean body mass?

[TrucksAndDinosaurs]

I've got a bit too lean and am slightly worried that I've dropped 5lb lean body mass as well as dropping body fat. Info pasted from trainer using callipers below.

Oct 7th- BF% 17%
Fat Weight - 22.63 lbs
Lean Body Weight - 110.37 lbs

Dec. 27 BF% 15.73%
Fat Weight - 19.66 lbs
Lean Body Weight - 105.37lb

What's the best way for me to protect my lean body mass and bulk up a bit?

Currently I eat about 100g carbs daily, about 1800 calories and do dance/strength training 5x week: pole fitness, barre, yoga and Jillian Michaels DVDs which are HIIT, abs, cardio and strength.

I like being lean and ripped and strong but don't want to get too drawn and haggard

I prefer body weight/free weight training at home in short bursts. I can't access a gym.

Tia. :)

I'm rather late to this but there is a very good instructor called Sally Moss who runs courses just for women that focus on correct technique for heavy lifting. She has two websites:-

strengthambassadors.com/ladieswholift/

gubernatrix.co.uk/

Great links Nicky! :o