To be a good runner, you need strong glutes and hamstrings to propel the body forwards, a solid core to generate force, and a strong upper body to keep you stable. The problem is, if you’re not training right, running can wear down muscle. We sat down with Harvey Lawton – co-founder of Run Shape Resilience and ultrarunner William Goodge’s strength coach – to discover his secrets for becoming a stronger runner, including a seven-day programme to kick-start your new regime…