Build Up Period

[OsirisD]

Hey Ed,
My knee is ok. Changing terrain probably helped.

The 2k session felt really comfortable, however, I cannot say the same for the 1k session today...

Monday(day 07) I did a 1hr easy; 9.89km @ 6.04/km @ 149bpm avg HR @ 36 deg C

Tuesday(day 08) I did the 6 x 1k session. Plan was 4min/km but I failed to take into account the temperature(33 deg C). The first 3 laps were ok, however the last 3 weren't. Compared to the last 6 x 1k session, HR looks better but I have no ideea why I just couldn't accelerate. Legs felt heavy despite the fact that I had HR reserve left. Anyway, breakdown below:

• km 1 -> 3m:58s @ 167 bpm avg, perceived effort 2/5
  [INDENT]r1 -> 1m @ 155 bpm avg & 137 bpm right at the start of 2'nd km[/INDENT]
  
• km 2 -> 4m:01s @ 171 bpm avg, perceived effort 3/5
  [INDENT]r2 -> 1m @ 161 bpm avg & 149 bpm right at the start of 3'rd km[/INDENT]
  
• km 3 -> 3m:59s @ 173 bpm avg, perceived effort 3/5
  [INDENT]r3 -> 1m @ 166 bpm avg & 152 bpm right at the start of 4'th km[/INDENT]
  
• km 4 -> 4m:04s @ 176 bpm avg, perceived effort 4.5/5
  [INDENT]r4 -> 1m @ 168 bpm avg & 153 bpm right at the start of 5'th km[/INDENT]
  
• km 5 -> 4m:13s @ 179 bpm avg, perceived effort 5/5
  [INDENT]r5 -> 1m @ 167 bpm avg & 154 bpm right at the start of 6'th km[/INDENT]
  
• km 6 -> 4m:12s @ 175 bpm avg, perceived effort 5/5
  [INDENT]r6 -> 1m @ 168 bpm avg & 152 bpm right at the end[/INDENT]
  

For this Saturdays session(day 12), what do you suggest I do? If I do a paced 5k, what pace should I aim for? Temperature forecast for next Saturday is 24-25 deg C, so a bit cooler.