Welcome to Evoke Endurance forum.
Training Peaks provides a good platform to capture critical metrics, how did you feel and perceived exertion.
Depending on the workout, the details I include in post-activity comments vary. For a gym-based workout like Stairmaster/Treadmill, I will note the settings (incline/speed/level) and any adjustments I made to the TSS. For e.g. base hrTSS might be 60, but I might another 10 TSS to adjust for elevation gain.
For a long day in the mountains, I might note the weather (temperature), my layering system (what worked/didn’t), food/water intake, etc. I will also summarize how I felt overall and any changes I should make. Here again, I will capture the original hrTSS and then adjustments I made based on backpack weight and elevation gain/drop.
Basically include information that you might find helpful when you review the workout again.
Does this help?