The Lap Feature allows you to group multiple exercises into a single logical unit within a workout script. This is especially useful for workout patterns like EMOM (Every Minute On the Minute), where multiple movements need to be completed within a single timed interval.

To indicate that exercises should be treated as part of the same lap, prefix each exercise with a + symbol:

(30) :60 EMOM
  + 5 Pullups
  + 10 Pushups
  + 15 Air Squats

In this example, all three exercises are considered part of a single 60-second unit, and this unit is repeated 30 times.

Behind the scenes, the Lap Feature works by:

1. The parser identifies statements with + symbols as containing "LapFragment" elements
2. These statements are marked with isLeaf: true, even if they have child nodes
3. The runtime treats these nodes as leaf nodes, ensuring that all their children are processed together as a single unit
4. This prevents the runtime from navigating into individual child nodes separately

(20) :60 EMOM
  + 10 Kettlebell Swings 53lb
  + 10 Box Jumps 24"

Each minute, perform both exercises (10 KB swings followed by 10 box jumps), resting any remaining time within the minute. Repeat for 20 rounds.

(20:00)
  15 Wall Balls 20lb
  (3)
    + 5 Pullups
    + 10 Pushups
  20 Double-Unders

Within a 20-minute AMRAP, perform 15 wall balls, then a mini-circuit of 5 pullups and 10 pushups (repeated 3 times), followed by 20 double-unders.

(8) :240 :60
  + 400m Run
  + 15 Burpees

Eight rounds of a complex interval: perform a 400m run followed by 15 burpees with a 4-minute work period and 1-minute rest period.

The Lap Feature is implemented through:

1. The isLeaf property on the StatementNode interface
2. Detection of lap fragments in the parser's visitor pattern
3. Special handling in the runtime execution engine

This creates a flexible workout structure that can represent complex training patterns while maintaining a clean, simple syntax.