Extract only odd rows in a matrix

Hi, how would I modify the following code if I only want to extract the odd rows in the output matrix. The output is generated by ODE45 and I am referring to the third variable. I have already tried to use the matrix indexing in matlab but it's not working. How would I go about this? If my output is given as below?

m = y(:,3);

Answer 1

[Matt J]

m=y(1:2:end,3);