stick with the running, just start to increase mileage each week, I am no expert but has worked for me. This time last year I had only been running for 2 months and just building up to my first 10k race(having put on weight through drinking too much and not exercising at all,that and packing up smoking) fast forward 1 year and I have completed 3 half marathons this year(PB last sunday of 1:44) and 5 weeks ago completed a marathon in 4:07. However, swimming for me at the mo is almost nonexistent ad not been on the bike for a while - although about to purchase a turbo for the winter miles.
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