She's 33 now and her natarajasana pose on that cover while really good compared to most people's is really poor compared to that pose held by her 29 year old self
Or the photographer took it from that angle/wanted her to adjust it because s/he felt the lines looked better for the photo in relation to the letters C and N.
The fact that somebody is exercising at a higher BMI is healthy. Constant images of only women with nigh on perfect bodies taking part in physical activity reinforce the attitude that exercise is not something you should participate in when you're actually in a group that would likely benefit the most from doing so.
After all, if the perception that only slim and gorgeous women do yoga or any other exercise, why would the overweight or obese woman wishing she could try it want to risk going to a class? She'd be surrounded by perfect people/be laughed at/they'd be horrified by her polluting the purity of their gaze.
I've generally been treated perfectly well in gyms and classes, but there have been times when I haven't been - on one occasion, it was a pair of men on the stairs to the gym who took it upon themselves to inform me that a fat bitch like me had no business being in their gym and I should fuck off 'back to MccyD's', another time it was a woman whispering conspicuously amongst her friends 'I don't know what she's doing here, she won't have a clue what level we're at'. There is no way on earth I would ever exercise alone outside, however, as the abusive comments yelled at me from cyclists and van drivers was fucking relentless. I know that this is not a phenomenon restricted to just larger women, but having done it when both underweight and overweight, the number of spiteful and outright aggressive comments go up exponentially as your BMI increases.
To me, complaining that larger women should not be seen to exercise and essentially erasing them from discussions of fitness unless as a dire warning or device to criticise does more to convince them not to even think of taking any steps that could improve their health - the same mindset that says 'You might as well not bother if you can't be perfect' in weightloss, healthy eating and anything else that requires a bit of bravery or change in behaviour.
And that isn't healthy.