Ii have, by my estimation about 600 miles on my Asics. I am experiencing some hamstring/nerve type pain discomfort. Could it be the shoes because they are all done? They still feel OK. I do all my running on a tread mill and run only to stay in shape for tennis. Any suggestions as to other types of exercise to get the heart rate up as well? I think I will try walking on the treadmill at a brisk pace too.

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles