Tempo workouts, speedwork, long runs, not to mention work, family and life in general... how can a runner fit it all in? One time-efficient solution: combo workouts, which blend elements of quality runs to make the most of every minute you have

data and is a decent starting point for gauging an athlete's overall endurance potential. But any event over about 3000m is too long to sustain at 100 per cent of our maximum oxygen uptake. So marathoners and 10K fans alike need to know not just how

distance for running, whether you're doing a 5K or a marathon," says Minichiello. "Jess does very short speed reps and then 'over reps', where she runs further than the race distance.The short reps with long recoveries prime your  body for quick bursts

and FuelbeltAlec Smith (Surrey)Monday September 12 - Maxifuel Energy and Recovery Nutrition KitMark Goodchild (Kent)Tuesday September 13 - Free place in the Malta MarathonRichard Cross (Leeds)Wednesday September 14 - Nuun Electrolytes and FuelbeltKelly Paterson