exxxviii wrote:
SpeedNeeder wrote:
I usually try not to run and bike the same day, but maybe that's something I can look at changing. (because I'm sure any 5k running plan will have me running 5/6 days per week).
Since I hit 50 (late 40s, actually) I am finding that I cannot comfortably run back-to-back days. I currently run 4 days/week, and that is probably pushing the limit of what my knees want to deal with. I am running about 25 miles/week, and I can ramp up to ~35, but I cannot get much more without persistent soreness and increased injury risk. So, adjust your # weekly runs and distances according to what your body can handle.
Biking, on the other hand, is easy. I double-up bike and run days with very little impact to either workout. So, give it a try, but you may find that you can ride on a run day without impacts. I ride 2x/week on run days and 1x/week on swim days.
QFT.
You are at an age where intensity on the run is very dicey. You can bike a lot, and swim a lot, without too much fear of injury, since the forces involved are pretty small. However, the forces in running are much greater, and you ain't no spring chicken any more. Doing high-speed runs can result in injury, and at our age (I'm 59) those take much longer to recover from than you realize. Don't push the pace on the runs you do, and don't overdue the frequency.
(speaking as pretty much a sprint triathlete)
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"Go yell at an M&M"