What people often do is they put off something for so long that eventually they will just start telling themselves it's too late. No it's never too late, a year from now you will have wished you started today.
Squat jump Squat down until your knees are bent about 90 degrees. Immediately swing your arms overhead and jump upward as high as you can. As you land, gently bend your knees and sink back down into the squat position.