Suggestions please. Went for 10 miles this morning trotting merrily at 11 min miles on a flat course (ish) out and back. Ave HR at 113on outbound similar on return to 4 miles (ie 9 miles overall) when suddenly shot up to 160 No change in pace, in fact slowed a little. After I finished it dropped within 90 secs to 68 bpm.
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I just put it down to the equipment getting 'confused'.
As long as you feel OK and it doesn't happen too often, don't worry.
It also happened last week at same distance, on a different route and I put it down to he fact that I was shattered by that time and low glycolen levels. Willkeep monitoring the monitor.
Doc thinks its bad contacts on chest strap. He tells me not to worry.
Will take on board all advice, although usually rink 500ml of Isostar on run.