Want to tighten your butt, get more definition in your legs, sculpt your core, and improve your strength and stamina? Sprinting will help you achieve all the above. To learn the basics of sprinting and why it's great for building lean muscle, POPSUGAR ...

'When your time's up, it's up' - Caleb Ewan visits the Tour de France but has no regrets about retirement Jasper Philipsen leads Alpecin-Deceuninck at Vuelta a España with great chance at opening stage red jersey 'It will be full throttle right away ...