Training towards a sub 45 minute 10K in a year

[pit75]

Today was 5 x 1k session. Here are the results:

10 minutes warm-up // 5 x 1k with 90 sec rest // 10 minutes cool-down

TIME // AVG HR
1. km: 4:23 // 155
2. km: 4:20 // 161
3. km: 4:22 // 161
4. km: 4:21 // 162
5. km: 4:05 // 168 (highest HR 176)

Lowest rest HR:
- before 1st : 116
- before 2nd: 118
- before 3th : 125
- before 4th : 128
- before 5th : 130


I feel little tension in my left hamstring, but other than that I feel ok.