I started mixing extra whey into her food, small amounts at first, just to get her used to the taste, and slightly more every meal. Right now, she’s eating about four meals of 50% cat food and 50% whey powder a day, about 50g protein total, which, for a 5kg cat, is equivalent to a human eating about 750g of protein a day.

The last three months I got her started on creatine, which she hasn’t seemed to noticed. 2-3g per day, sprinkled on top of her food.

My cat has this knitted sweater thing (I live in a cold climate, so cats often wear these things outside), to which I attached small weights. Mainly fishing sinkers. I attached them one by one, so that she wouldn’t notice the additional weight. By now, my cat is wearing this 2.5kg knitted sweater around outside, climbing trees, running around, normal cat stuff.

I also feed her vitamin D, fish oil, and a multivitamin, crushed up into her water bowl.

In addition to the weighted vest training, I’ve started my cat on climbing this large tree in my backyard (three sets of five climbs up and down, enticing her with food), and I managed to figure out a way to make her do sort of a crude bench press by turning her upside down and pushing down on her paws (three sets of 8-10 reps).

My cat has made decent gains so far. Her forelimbs are noticeably bigger, and her chest has increased in size too. A little extra fat (probably around 15% atm), but I’m planning on putting her on an EC stack and maybe Yohimbine HCL.