I wouldn't buy another domain name but try first by putting up a couple of new pages with a top search term on 'yoga' like 'yoga poses', 'yoga techniques', 'yoga for men', etc but put the yoga word and your county word in the file path. Cheaper and very effective as we changed the word "products" in our file paths to "gifts" for our gift box website and showed immediate improvements in unique visitors.
In case you didn't realise, you've also got 2 x 404's on Beach yoga and Nutrition under your Resources.

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Handcrafted Maori and New Zealand gifts in beautiful gift boxes