{% set totals = namespace(reps=0) %} {% for top_set in top_sets %}{% set totals.reps = totals.reps + (top_set.repetitions or 0)|int %}{% endfor %}

This session

Exercises
{{ top_sets|map(attribute='exercise_id')|unique|list|length }}
Top sets
{{ top_sets|length }}
Reps
{{ totals.reps }}

Based on your logged top sets.