I managed to get W4 R3 done as I haven't run since Saturday 😳 (did so a BlockFit class on Tuesday though) But a thunderstorm cleared the air a bit and it didn't feel so hot, so I went for it!
I must say I really struggled with my breathing and despite following the 3 out 3 in - still felt really out of puff! I can't imagine how I'm going to cope with longer runs for W5 🙄 But at least I did it 😁